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Unsourced material may be challenged and removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22M45+Quadmount%22">"M45 Quadmount"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22M45+Quadmount%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22M45+Quadmount%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22M45+Quadmount%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22M45+Quadmount%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22M45+Quadmount%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">May 2014</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox vcard" style="width:25.5em;border-spacing:2px;"><tbody><tr><th colspan="2" class="infobox-above hproduct" style="background-color:#C3D6EF;color:inherit;text-align:center;vertical-align:middle;font-size:110%;"><span class="fn org"> M45 Quadmount </span></th></tr><tr><td colspan="2" class="infobox-image" style="text-align:center;border-bottom:1px solid #aaa;line-height:1.5em;"><span typeof="mw:File"><a href="/wiki/File:Montaje_Maxon.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/Montaje_Maxon.JPG/330px-Montaje_Maxon.JPG" decoding="async" width="300" height="225" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/Montaje_Maxon.JPG/500px-Montaje_Maxon.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/13/Montaje_Maxon.JPG/960px-Montaje_Maxon.JPG 2x" data-file-width="3648" data-file-height="2736" /></a></span><div class="infobox-caption">M45 on an M20 trailer in the <a href="/wiki/Mus%C3%A9e_des_Blind%C3%A9s" title="Musée des Blindés">Musée des Blindés</a></div></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em">Type</th><td class="infobox-data"><a href="/wiki/Anti-aircraft_gun" class="mw-redirect" title="Anti-aircraft gun">Anti-aircraft gun</a><br /><a href="/wiki/Heavy_machine_gun" title="Heavy machine gun">Heavy machine gun</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em">Place of origin</th><td class="infobox-data">United States</td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#C3D6EF;color:inherit;text-align:center;vertical-align:middle;font-size:110%;">Service history</th></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em">Wars</th><td class="infobox-data"><a href="/wiki/World_War_II" title="World War II">World War II</a><br /><a href="/wiki/First_Indochina_War" title="First Indochina War">First Indochina War</a><br /><a href="/wiki/Korean_War" title="Korean War">Korean War</a><br /><a href="/wiki/Vietnam_War" title="Vietnam War">Vietnam War</a><br /><a href="/wiki/Portuguese_Colonial_War" title="Portuguese Colonial War">Portuguese Colonial War</a><br /><a href="/wiki/Indo-Pakistani_War_of_1965" class="mw-redirect" title="Indo-Pakistani War of 1965">Indo-Pakistani War of 1965</a><br /><a href="/wiki/Lebanese_Civil_War" title="Lebanese Civil War">Lebanese Civil War</a><br /><a href="/wiki/1978_South_Lebanon_conflict" title="1978 South Lebanon conflict">1978 South Lebanon conflict</a><br /><a href="/wiki/Nicaraguan_Revolution" title="Nicaraguan Revolution">Nicaraguan Revolution</a><br /><a href="/wiki/1982_Lebanon_War" title="1982 Lebanon War">1982 Lebanon War</a><br /><a href="/wiki/Sino-Vietnamese_War" title="Sino-Vietnamese War">Sino-Vietnamese War</a><br /><a href="/wiki/Third_Indochina_War" title="Third Indochina War">Third Indochina War</a><br /><a href="/wiki/Salvadoran_Civil_War" title="Salvadoran Civil War">Salvadoran Civil War</a></td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#C3D6EF;color:inherit;text-align:center;vertical-align:middle;font-size:110%;">Specifications</th></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em">Mass</th><td class="infobox-data">2,396 lb (1,087 kg)</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em"><a href="/wiki/Gun_barrel" title="Gun barrel">Barrel</a> length</th><td class="infobox-data">5 ft 3 in (1.6 m) L/50<sup id="cite_ref-:0_1-0" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><td colspan="2" class="infobox-full-data"><hr /></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em"><a href="/wiki/Shell_(projectile)" title="Shell (projectile)">Shell</a></th><td class="infobox-data"><a href="/wiki/.50_BMG" title=".50 BMG">.50 BMG (12.7×99mm NATO)</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em"><a href="/wiki/Shell_(projectile)" title="Shell (projectile)">Shell</a> weight</th><td class="infobox-data">21 oz (.6 kg)</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em"><a href="/wiki/Caliber" title="Caliber">Caliber</a></th><td class="infobox-data">0.50 in (12.7 mm)</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em"><a href="/wiki/Action_(firearms)" title="Action (firearms)">Action</a></th><td class="infobox-data"><a href="/wiki/Recoil_operation" title="Recoil operation">Short recoil-operated</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em"><a href="/wiki/Elevation_(ballistics)" title="Elevation (ballistics)">Elevation</a></th><td class="infobox-data">-5° to +90°</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em"><a href="/wiki/Gun_laying" title="Gun laying">Traverse</a></th><td class="infobox-data">360°<sup id="cite_ref-:0_1-1" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em"><a href="/wiki/Rate_of_fire" title="Rate of fire">Rate of fire</a></th><td class="infobox-data">575 x 4 = 2,300 rpm</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em"><a href="/wiki/Muzzle_velocity" title="Muzzle velocity">Muzzle velocity</a></th><td class="infobox-data">2,900 ft/s (890 m/s)</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em">Effective firing range</th><td class="infobox-data">4,900 ft (1.5 km) (effective AA)<br />15,000 ft (4.5 km) (maximum AA)</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em">Maximum firing range</th><td class="infobox-data">1.1 mi (1.8 km) (horizontal)<br />1.6 mi (2.5 km) (maximum)</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:1em">Feed system</th><td class="infobox-data"><a href="/wiki/Belt_(firearm)" class="mw-redirect" title="Belt (firearm)">Belt-fed</a> (M2 or M9 links)<sup id="cite_ref-:0_1-2" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr></tbody></table> <p>The <b>M45 Quadmount</b> was a towed <a href="/wiki/Anti-aircraft_gun" class="mw-redirect" title="Anti-aircraft gun">anti-aircraft gun</a> consisting of four <a href="/wiki/.50_BMG" title=".50 BMG">.50 caliber</a> <a href="/wiki/M2_Browning" title="M2 Browning">M2 Browning machine guns</a> mounted in pairs on either side of an armored open-top gunner's compartment with electrical laying. It was developed by the <a href="/w/index.php?title=W._L._Maxson_Corporation&action=edit&redlink=1" class="new" title="W. L. Maxson Corporation (page does not exist)">W. L. Maxson Corporation</a> to replace the earlier M33 twin mount (also from Maxson).<sup id="cite_ref-RottmanBrowning_2-0" class="reference"><a href="#cite_note-RottmanBrowning-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Although designed as an <a href="/wiki/Anti-aircraft_warfare" title="Anti-aircraft warfare">anti-aircraft weapon</a>, it was also used against ground targets, where it earned the nicknames "meat chopper" and "Krautmower".<sup id="cite_ref-RottmanBrowning_2-1" class="reference"><a href="#cite_note-RottmanBrowning-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Introduced in 1944, it saw even service as late as the <a href="/wiki/Vietnam_War" title="Vietnam War">Vietnam War</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M45_Quadmount&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In order to develop a mobile anti-aircraft weapon, several 0.5 inch (12.7mm) twin machine gun mounts were tested on the chassis of the <a href="/wiki/M2_half-track_car" title="M2 half-track car">M2 half-track</a> including <a href="/wiki/Bendix_Corporation" title="Bendix Corporation">Bendix</a>, <a href="/wiki/Glenn_L._Martin_Company" title="Glenn L. Martin Company">Martin Aircraft Company</a>, and Maxson. The Maxson M33 turret mount was preferred and—on the larger M3 half-track (T1E2)—was accepted for service in 1942 as the <a href="/wiki/M13_Half-track" class="mw-redirect" title="M13 Half-track">M13 Multiple Gun Motor Carriage</a>. The mount was also used on the similar M5 half track as the <a href="/wiki/M14_Half-track" class="mw-redirect" title="M14 Half-track">M14 Multiple Gun Motor Carriage</a>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Green150_4-0" class="reference"><a href="#cite_note-Green150-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>Experimentally, the Quadmount was also tested in 1942 on a <a href="/wiki/M3_Stuart" title="M3 Stuart">M3 Light Tank</a> in place of the tank's turret but the project was terminated.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>Even as production of the two MGMC vehicles was underway, there was work to increase the firepower. Re-working the M33 to take four machine guns produced the M45 mounting. </p><p>The M45 Quadmount was the principal weapon (along with the <a href="/wiki/37_mm_Gun_M1" class="mw-redirect" title="37 mm Gun M1">37mm gun</a>) of highly mobile anti-aircraft artillery battalions deployed in the <a href="/wiki/European_Theater_of_Operations" class="mw-redirect" title="European Theater of Operations">European Theater</a> during World War II. These battalions provided invaluable air defense to much larger units, particularly field artillery. The M45 Quadmount units served as a very strong deterrent to <a href="/wiki/Strafing" title="Strafing">strafing</a> runs by enemy warplanes as, in addition to their gross firepower, its quartet of Browning M2HB "heavy barrel" .50 caliber guns were capable of being "tuned" to converge upon a single point at distances which could be reset while in use. Multiple-gun mounts were developed for the M2 Browning because the M2's <a href="/wiki/Rate_of_fire" title="Rate of fire">rate of fire</a> (450–550 rounds per minute) for a single gun was too low for anti-aircraft use.<sup id="cite_ref-RottmanBrowning_2-2" class="reference"><a href="#cite_note-RottmanBrowning-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>The M45 found use throughout the war as a land-based weapon, particularly during the <a href="/wiki/Battle_of_the_Bulge" title="Battle of the Bulge">Battle of the Bulge</a>. Although the Allies achieved <a href="/wiki/Air_supremacy" title="Air supremacy">air supremacy</a> by the <a href="/wiki/Invasion_of_Normandy" class="mw-redirect" title="Invasion of Normandy">invasion of Normandy</a> in June 1944, German attack runs were still a threat. German <i>Jabo</i> <a href="/wiki/Fighter-bomber" title="Fighter-bomber">fighter-bombers</a> could approach and attack at low altitude and then quickly retreat to avoid Allied fighters. The <a href="/wiki/Luftwaffe" title="Luftwaffe">Luftwaffe</a> also mustered a large number of planes for <a href="/wiki/Operation_Bodenplatte" title="Operation Bodenplatte">Operation Bodenplatte</a> that took place on New Year's Day 1945. </p><p>It was also tested by the US Navy as a solution for the <a href="/wiki/Kamikaze" title="Kamikaze">Kamikaze</a> attacks that started in late 1944. Two <a href="/wiki/Essex-class_aircraft_carrier" title="Essex-class aircraft carrier">Essex class aircraft carriers</a> received six mounts each for operational testing starting with <a href="/wiki/USS_Lexington_(CV-16)" title="USS Lexington (CV-16)">CV-16 Lexington</a> in May 1945. The guns were too light and ineffective against the high speeds that the diving Kamikaze aircraft possessed.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p><p>The M45 Quadmount was ineffective against the new, fast-flying planes of the <a href="/wiki/Jet_Age" title="Jet Age">Jet Age</a>. However, it was used against infantry targets in US post-war service. In Vietnam they were pressed into service to defend bases and to ride escort convoys along Viet Cong roads.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>The <a href="/wiki/French_Army" title="French Army">French Army</a> also used M45s in combat. M45 Quad Mounts were placed in trucks to deal with ambushes and four M45s were used during the <a href="/wiki/Battle_of_Dien_Bien_Phu" title="Battle of Dien Bien Phu">Battle of Dien Bien Phu</a>.<sup id="cite_ref-wehrmacht-awards_9-0" class="reference"><a href="#cite_note-wehrmacht-awards-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="TCM-20">TCM-20</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M45_Quadmount&action=edit&section=2" title="Edit section: TCM-20"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <b>TCM-20</b> was a postwar Israeli development of the M45 mount, equipped with two 20mm <a href="/wiki/Hispano-Suiza_HS.404" title="Hispano-Suiza HS.404">Hispano-Suiza HS.404</a> cannons in lieu of machine guns. In frontline Israeli service, it was replaced by the <a href="/wiki/M163_VADS" title="M163 VADS">M163 Vulcan Air Defense System</a> in the 1970s, but some reserve units still used TCM-20s into the 1980s. The weapon was also exported to several third-world countries. </p> <div class="mw-heading mw-heading2"><h2 id="Mountings">Mountings</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M45_Quadmount&action=edit&section=3" title="Edit section: Mountings"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>During World War II, the M45 turret was mounted on two specific systems; the M16 Multiple Gun Motor Carriage and the M51 Multiple Machine Gun Carriage. When mounted on the M20 trailer, it was known as the M55 Machine Gun Trailer Mount, but this system had not finished testing before the cessation of hostilities. M51s were withdrawn from service by the end of World War II in favor of the M55. </p><p>During the Korean War, the M55 and M16 saw extensive combat, and lessons learned in Korea led to the conversion of an additional 1200 M3 halftracks into the M16A1 variant by adding an M45 turret. These can be identified by the lack of fold-down armor and rear troop door on the crew compartment and were often fitted with the roller front bumper instead of the winch bumper fitted to all M16s. In 1954 an additional modification was made to roughly 700 M16 MGMCs, adding the rear troop door and bolting the fold-down armor in the up position. This modification became known as the M16A2 MGMC. </p><p>The M55 received a new, more powerful generator in the 1960s and served through the Vietnam War, usually mounted in the back of an <a href="/wiki/M35_series_2%C2%BD-ton_6x6_cargo_truck" class="mw-redirect" title="M35 series 2½-ton 6x6 cargo truck">M35 2.5 ton</a> or <a href="/wiki/M54_5-ton_6x6_truck" class="mw-redirect" title="M54 5-ton 6x6 truck">M54 5-ton</a> <a href="/wiki/Gun_truck" title="Gun truck">gun trucks</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Operation">Operation</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M45_Quadmount&action=edit&section=4" title="Edit section: Operation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The M45 is operated by two loaders and one gunner. The mount is capable of traversing a full 360 degrees around, with an angle elevation between -10 and +90 degrees. Traverse and elevation are electrically driven, powered by two rechargeable 6-volt batteries. All four guns could be fired at once, but standard practice was to alternate between firing the upper and lower pair of guns, allowing one pair to cool while the other was in use. This allowed for longer periods of action as overheating of the gun barrels was lessened.<sup id="cite_ref-RottmanBrowning_2-3" class="reference"><a href="#cite_note-RottmanBrowning-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>The "tombstone" model M2 ammunition chests held 200 rounds each—with one ammunition chest on an M45 system holding ten times as many rounds as each of the four twenty-round 20mm magazines of the German <i>Flakvierling</i> system held (and which, on the German ordnance system, had to be changed every six seconds on each gun of the quartet to ensure its own top 800 rpm "combined" firing rate), with each M2 ammo chest weighing 89 pounds each when full.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (May 2014)">citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading2"><h2 id="Gallery">Gallery</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M45_Quadmount&action=edit&section=5" title="Edit section: Gallery"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:G-508_GMC_CCKW-353-B2_with_m55_Machine-gun_mount_pic3.JPG" class="mw-file-description" title="CCKW-353-B2 gun truck with M45 on M20 trailer in bed. This configuration did not see combat in World War II as it was still in testing by the cessation of hostilities"><img alt="CCKW-353-B2 gun truck with M45 on M20 trailer in bed. This configuration did not see combat in World War II as it was still in testing by the cessation of hostilities" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/50/G-508_GMC_CCKW-353-B2_with_m55_Machine-gun_mount_pic3.JPG/120px-G-508_GMC_CCKW-353-B2_with_m55_Machine-gun_mount_pic3.JPG" decoding="async" width="120" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/50/G-508_GMC_CCKW-353-B2_with_m55_Machine-gun_mount_pic3.JPG/250px-G-508_GMC_CCKW-353-B2_with_m55_Machine-gun_mount_pic3.JPG 1.5x" data-file-width="3412" data-file-height="2559" /></a></span></div> <div class="gallerytext"><a href="/wiki/GMC_CCKW" class="mw-redirect" title="GMC CCKW">CCKW-353-B2</a> <a href="/wiki/Gun_truck" title="Gun truck">gun truck</a> with M45 on M20 trailer in bed. This configuration did not see combat in World War II as it was still in testing by the cessation of hostilities</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:TCM-20-hatzerim-2.jpg" class="mw-file-description" title="Israeli TCM-20, Israeli Air Force Museum, equipped with a pair of 20mm Hispano-Suiza HS.404 cannon"><img alt="Israeli TCM-20, Israeli Air Force Museum, equipped with a pair of 20mm Hispano-Suiza HS.404 cannon" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/TCM-20-hatzerim-2.jpg/120px-TCM-20-hatzerim-2.jpg" decoding="async" width="120" height="83" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/TCM-20-hatzerim-2.jpg/250px-TCM-20-hatzerim-2.jpg 1.5x" data-file-width="2558" data-file-height="1776" /></a></span></div> <div class="gallerytext">Israeli TCM-20, <a href="/wiki/Israeli_Air_Force_Museum" title="Israeli Air Force Museum">Israeli Air Force Museum</a>, equipped with a pair of 20mm <a href="/wiki/Hispano-Suiza_HS.404" title="Hispano-Suiza HS.404">Hispano-Suiza HS.404</a> cannon</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:M20_trailer_mount.jpg" class="mw-file-description" title="M20 trailer mount, 1947"><img alt="M20 trailer mount, 1947" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7f/M20_trailer_mount.jpg/120px-M20_trailer_mount.jpg" decoding="async" width="120" height="62" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7f/M20_trailer_mount.jpg/250px-M20_trailer_mount.jpg 1.5x" data-file-width="4642" data-file-height="2407" /></a></span></div> <div class="gallerytext">M20 trailer mount, 1947</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:M17_trailer_mount.jpg" class="mw-file-description" title="M17 trailer mount, 1947"><img alt="M17 trailer mount, 1947" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/M17_trailer_mount.jpg/120px-M17_trailer_mount.jpg" decoding="async" width="120" height="51" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/M17_trailer_mount.jpg/180px-M17_trailer_mount.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5c/M17_trailer_mount.jpg/240px-M17_trailer_mount.jpg 2x" data-file-width="4556" data-file-height="1920" /></a></span></div> <div class="gallerytext">M17 trailer mount, 1947</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:G-102_White_M16A1_Half-Track_MGMC_pic2.JPG" class="mw-file-description" title="M16 MGMC"><img alt="M16 MGMC" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/G-102_White_M16A1_Half-Track_MGMC_pic2.JPG/120px-G-102_White_M16A1_Half-Track_MGMC_pic2.JPG" decoding="async" width="120" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/G-102_White_M16A1_Half-Track_MGMC_pic2.JPG/180px-G-102_White_M16A1_Half-Track_MGMC_pic2.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1f/G-102_White_M16A1_Half-Track_MGMC_pic2.JPG/240px-G-102_White_M16A1_Half-Track_MGMC_pic2.JPG 2x" data-file-width="3151" data-file-height="2372" /></a></span></div> <div class="gallerytext"><a href="/wiki/M16_Multiple_Gun_Motor_Carriage" title="M16 Multiple Gun Motor Carriage">M16 MGMC</a></div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Quad_0.50_used_for_convoy_security_along_Route_9.jpg" class="mw-file-description" title="Quadmount used for convoy security along Route 9, Vietnam 1968"><img alt="Quadmount used for convoy security along Route 9, Vietnam 1968" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Quad_0.50_used_for_convoy_security_along_Route_9.jpg/120px-Quad_0.50_used_for_convoy_security_along_Route_9.jpg" decoding="async" width="120" height="80" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Quad_0.50_used_for_convoy_security_along_Route_9.jpg/250px-Quad_0.50_used_for_convoy_security_along_Route_9.jpg 1.5x" data-file-width="1798" data-file-height="1194" /></a></span></div> <div class="gallerytext">Quadmount used for convoy security along <a href="/wiki/National_Route_9_(Vietnam)" title="National Route 9 (Vietnam)">Route 9</a>, Vietnam 1968</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:M45_Quadmount-1965_Indo-Pakistani_War.jpg" class="mw-file-description" title="Pakistani soldiers operating a M45 Quadmount during the 1965 conflict with India"><img alt="Pakistani soldiers operating a M45 Quadmount during the 1965 conflict with India" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/M45_Quadmount-1965_Indo-Pakistani_War.jpg/119px-M45_Quadmount-1965_Indo-Pakistani_War.jpg" decoding="async" width="119" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/M45_Quadmount-1965_Indo-Pakistani_War.jpg/178px-M45_Quadmount-1965_Indo-Pakistani_War.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c6/M45_Quadmount-1965_Indo-Pakistani_War.jpg/238px-M45_Quadmount-1965_Indo-Pakistani_War.jpg 2x" data-file-width="770" data-file-height="778" /></a></span></div> <div class="gallerytext">Pakistani soldiers operating a M45 Quadmount during the 1965 conflict with India</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Lookout_Mountain_Laboratory_photographer_on_camera_mount.jpg" class="mw-file-description" title="Photographer on an M45 repurposed as camera mount at Lookout Mountain Air Force Station"><img alt="Photographer on an M45 repurposed as camera mount at Lookout Mountain Air Force Station" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/08/Lookout_Mountain_Laboratory_photographer_on_camera_mount.jpg/120px-Lookout_Mountain_Laboratory_photographer_on_camera_mount.jpg" decoding="async" width="120" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/08/Lookout_Mountain_Laboratory_photographer_on_camera_mount.jpg/180px-Lookout_Mountain_Laboratory_photographer_on_camera_mount.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/08/Lookout_Mountain_Laboratory_photographer_on_camera_mount.jpg/240px-Lookout_Mountain_Laboratory_photographer_on_camera_mount.jpg 2x" data-file-width="800" data-file-height="600" /></a></span></div> <div class="gallerytext">Photographer on an M45 repurposed as camera mount at <a href="/wiki/Lookout_Mountain_Air_Force_Station" title="Lookout Mountain Air Force Station">Lookout Mountain Air Force Station</a></div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="Operators">Operators</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M45_Quadmount&action=edit&section=6" title="Edit section: Operators"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/92/Flag_of_Belgium_%28civil%29.svg/40px-Flag_of_Belgium_%28civil%29.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/92/Flag_of_Belgium_%28civil%29.svg/60px-Flag_of_Belgium_%28civil%29.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/Belgium" title="Belgium">Belgium</a>: <a href="/wiki/Belgian_Army" class="mw-redirect" title="Belgian Army">Belgian Army</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Flag_of_Colombia.svg/40px-Flag_of_Colombia.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Flag_of_Colombia.svg/60px-Flag_of_Colombia.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/Colombia" title="Colombia">Colombia</a>: M45 units mounted on <a href="/wiki/M8_Greyhound" title="M8 Greyhound">M8 Greyhound armoured cars</a> by the <a href="/wiki/National_Army_of_Colombia" title="National Army of Colombia">Colombian Army</a>, used as counter-insurgency weapons against guerrilla ambushes in the Colombian mountains.</li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Flag_of_Ecuador.svg/23px-Flag_of_Ecuador.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Flag_of_Ecuador.svg/35px-Flag_of_Ecuador.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Flag_of_Ecuador.svg/45px-Flag_of_Ecuador.svg.png 2x" data-file-width="1440" data-file-height="960" /></span></span> </span><a href="/wiki/Ecuador" title="Ecuador">Equador</a><sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/34/Flag_of_El_Salvador.svg/23px-Flag_of_El_Salvador.svg.png" decoding="async" width="23" height="13" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/34/Flag_of_El_Salvador.svg/35px-Flag_of_El_Salvador.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/34/Flag_of_El_Salvador.svg/46px-Flag_of_El_Salvador.svg.png 2x" data-file-width="1005" data-file-height="567" /></span></span> </span><a href="/wiki/El_Salvador" title="El Salvador">El Salvador</a>: TCM-20</li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Flag_of_Denmark.svg/20px-Flag_of_Denmark.svg.png" decoding="async" width="20" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Flag_of_Denmark.svg/31px-Flag_of_Denmark.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Flag_of_Denmark.svg/40px-Flag_of_Denmark.svg.png 2x" data-file-width="512" data-file-height="387" /></span></span> </span><a href="/wiki/Denmark" title="Denmark">Denmark</a><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/c/c3/Flag_of_France.svg/40px-Flag_of_France.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/c/c3/Flag_of_France.svg/60px-Flag_of_France.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/France" title="France">France</a><sup id="cite_ref-wehrmacht-awards_9-1" class="reference"><a href="#cite_note-wehrmacht-awards-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/b/ba/Flag_of_Germany.svg/23px-Flag_of_Germany.svg.png" decoding="async" width="23" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/b/ba/Flag_of_Germany.svg/35px-Flag_of_Germany.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/b/ba/Flag_of_Germany.svg/46px-Flag_of_Germany.svg.png 2x" data-file-width="1000" data-file-height="600" /></span></span> </span><a href="/wiki/Germany" title="Germany">Germany</a>: <a href="/wiki/Bundeswehr" title="Bundeswehr">Bundeswehr</a> (1956–1962)</li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/56/Flag_of_Haiti.svg/40px-Flag_of_Haiti.svg.png" decoding="async" width="23" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/56/Flag_of_Haiti.svg/60px-Flag_of_Haiti.svg.png 2x" data-file-width="1000" data-file-height="600" /></span></span> </span><a href="/wiki/Haiti" title="Haiti">Haiti</a>: TCM-20, 6 units <sup id="cite_ref-Janes87-88armorarty_12-0" class="reference"><a href="#cite_note-Janes87-88armorarty-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Flag_of_the_United_States_%2823px%29.png/23px-Flag_of_the_United_States_%2823px%29.png" decoding="async" width="23" height="13" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Flag_of_the_United_States_%2823px%29.png/35px-Flag_of_the_United_States_%2823px%29.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Flag_of_the_United_States_%2823px%29.png/46px-Flag_of_the_United_States_%2823px%29.png 2x" data-file-width="69" data-file-height="39" /></span></span> </span><a href="/wiki/United_States" title="United States">United States</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Flag_of_Mexico.svg/40px-Flag_of_Mexico.svg.png" decoding="async" width="23" height="13" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Flag_of_Mexico.svg/60px-Flag_of_Mexico.svg.png 2x" data-file-width="980" data-file-height="560" /></span></span> </span><a href="/wiki/Mexico" title="Mexico">Mexico</a>: 84 M45 units in service with the <a href="/wiki/Mexican_Army" title="Mexican Army">Mexican Army</a>.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/20/Flag_of_the_Netherlands.svg/23px-Flag_of_the_Netherlands.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/20/Flag_of_the_Netherlands.svg/35px-Flag_of_the_Netherlands.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/20/Flag_of_the_Netherlands.svg/45px-Flag_of_the_Netherlands.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/Netherlands" title="Netherlands">Netherlands</a>: <a href="/wiki/Royal_Netherlands_Army" title="Royal Netherlands Army">Royal Netherlands Army</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/Flag_of_Nicaragua.svg/23px-Flag_of_Nicaragua.svg.png" decoding="async" width="23" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/Flag_of_Nicaragua.svg/35px-Flag_of_Nicaragua.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/19/Flag_of_Nicaragua.svg/46px-Flag_of_Nicaragua.svg.png 2x" data-file-width="1000" data-file-height="600" /></span></span> </span><a href="/wiki/Nicaragua" title="Nicaragua">Nicaragua</a>: <a href="/wiki/National_Guard_(Nicaragua)" title="National Guard (Nicaragua)">National Guard of Nicaragua</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/09/Flag_of_South_Korea.svg/40px-Flag_of_South_Korea.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/09/Flag_of_South_Korea.svg/60px-Flag_of_South_Korea.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/South_Korea" title="South Korea">South Korea</a>: <a href="/wiki/Republic_of_Korea_Army" title="Republic of Korea Army">Republic of Korea Army</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Flag_of_South_Vietnam.svg/23px-Flag_of_South_Vietnam.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Flag_of_South_Vietnam.svg/35px-Flag_of_South_Vietnam.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Flag_of_South_Vietnam.svg/45px-Flag_of_South_Vietnam.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/South_Vietnam" title="South Vietnam">South Vietnam</a>: <a href="/wiki/Vietnamese_National_Army" title="Vietnamese National Army">Vietnamese National Army</a>, <a href="/wiki/Army_of_the_Republic_of_Vietnam" title="Army of the Republic of Vietnam">Army of the Republic of Vietnam</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Flag_of_the_Republic_of_China.svg/40px-Flag_of_the_Republic_of_China.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Flag_of_the_Republic_of_China.svg/60px-Flag_of_the_Republic_of_China.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/Taiwan" title="Taiwan">Taiwan (Republic of China)</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Flag_of_Thailand.svg/23px-Flag_of_Thailand.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Flag_of_Thailand.svg/35px-Flag_of_Thailand.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Flag_of_Thailand.svg/45px-Flag_of_Thailand.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/Thailand" title="Thailand">Thailand</a>: <a href="/wiki/Royal_Thai_Army" title="Royal Thai Army">Royal Thai Army</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Flag_of_Turkey.svg/23px-Flag_of_Turkey.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Flag_of_Turkey.svg/35px-Flag_of_Turkey.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Flag_of_Turkey.svg/45px-Flag_of_Turkey.svg.png 2x" data-file-width="1200" data-file-height="800" /></span></span> </span><a href="/wiki/Turkey" title="Turkey">Turkey</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Flag_of_Vietnam.svg/23px-Flag_of_Vietnam.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Flag_of_Vietnam.svg/35px-Flag_of_Vietnam.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/21/Flag_of_Vietnam.svg/45px-Flag_of_Vietnam.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/Vietnam" title="Vietnam">Vietnam</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/32/Flag_of_Pakistan.svg/23px-Flag_of_Pakistan.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/32/Flag_of_Pakistan.svg/35px-Flag_of_Pakistan.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/32/Flag_of_Pakistan.svg/45px-Flag_of_Pakistan.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/Pakistan" title="Pakistan">Pakistan</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Flag_of_the_Philippines_%28navy_blue%29.svg/40px-Flag_of_the_Philippines_%28navy_blue%29.svg.png" decoding="async" width="23" height="12" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Flag_of_the_Philippines_%28navy_blue%29.svg/60px-Flag_of_the_Philippines_%28navy_blue%29.svg.png 2x" data-file-width="1200" data-file-height="600" /></span></span> </span><a href="/wiki/Philippines" title="Philippines">Philippines</a>: <a href="/wiki/Philippine_Army" title="Philippine Army">Philippine Army</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Flag_of_Portugal.svg/23px-Flag_of_Portugal.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Flag_of_Portugal.svg/35px-Flag_of_Portugal.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Flag_of_Portugal.svg/45px-Flag_of_Portugal.svg.png 2x" data-file-width="600" data-file-height="400" /></span></span> </span><a href="/wiki/Portugal" title="Portugal">Portugal</a>: M45 in service with the <a href="/wiki/Portuguese_Army" title="Portuguese Army">Portuguese Army</a> as the <i>Metralhadora Quádrupla AA 12,7 mm m/953</i>.</li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Flag_of_Israel.svg/21px-Flag_of_Israel.svg.png" decoding="async" width="21" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Flag_of_Israel.svg/32px-Flag_of_Israel.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Flag_of_Israel.svg/41px-Flag_of_Israel.svg.png 2x" data-file-width="1100" data-file-height="800" /></span></span> </span><a href="/wiki/Israel" title="Israel">Israel</a>: TCM-20</li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/0/03/Flag_of_Italy.svg/40px-Flag_of_Italy.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/0/03/Flag_of_Italy.svg/60px-Flag_of_Italy.svg.png 2x" data-file-width="1500" data-file-height="1000" /></span></span> </span><a href="/wiki/Italy" title="Italy">Italy</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/9e/Flag_of_Japan.svg/40px-Flag_of_Japan.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/9e/Flag_of_Japan.svg/60px-Flag_of_Japan.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/Japan" title="Japan">Japan</a>: <a href="/wiki/Japan_Ground_Self-Defense_Force" title="Japan Ground Self-Defense Force">Japan Ground Self-Defense Force</a></li> <li><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c0/Flag_of_Jordan.svg/40px-Flag_of_Jordan.svg.png" decoding="async" width="23" height="12" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c0/Flag_of_Jordan.svg/60px-Flag_of_Jordan.svg.png 2x" data-file-width="1200" data-file-height="600" /></span></span> </span><a href="/wiki/Jordan" title="Jordan">Jordan</a><sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M45_Quadmount&action=edit&section=7" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/List_of_U.S._military_vehicles_by_supply_catalog_designation" class="mw-redirect" title="List of U.S. military vehicles by supply catalog designation">List of U.S. military vehicles by supply catalog designation</a></li> <li><a href="/wiki/DTM-4" class="mw-redirect" title="DTM-4">DTM-4</a></li> <li><a href="/wiki/2_cm_FlaK_30#2_cm_Flakvierling_38" class="mw-redirect" title="2 cm FlaK 30">Flakvierling 38</a>, quadruple 20 mm autocannon-based weapon system mountable onto a <a href="/wiki/Sd.Kfz._7#Variants" title="Sd.Kfz. 7">Sd.Kfz. 7/1</a> half-track, as just one example</li> <li><a href="/wiki/Wirbelwind" title="Wirbelwind">Wirbelwind</a>, quad-barrel 2 cm Flakvierling 38.</li> <li><a href="/wiki/ZPU" title="ZPU">ZPU-4</a>, quadruple 14.5mm heavy machine gun-based weapon system mountable onto <a href="/wiki/Technical_(vehicle)" title="Technical (vehicle)">technicals</a>, cargo trucks, and APCs.</li> <li><a href="/wiki/M42_Duster" title="M42 Duster">M42 Duster</a>, dual 40mm autocannon, post war SPAA operational until 1988.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M45_Quadmount&action=edit&section=8" title="Edit section: Notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-:0-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-:0_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:0_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-:0_1-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFChamberlain1975" class="citation book cs1">Chamberlain, Peter (1975). <i>Anti-aircraft guns</i>. Gander, Terry. New York: Arco Pub. Co. p. 54. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0668038187" title="Special:BookSources/0668038187"><bdi>0668038187</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/2000222">2000222</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Anti-aircraft+guns&rft.place=New+York&rft.pages=54&rft.pub=Arco+Pub.+Co&rft.date=1975&rft_id=info%3Aoclcnum%2F2000222&rft.isbn=0668038187&rft.aulast=Chamberlain&rft.aufirst=Peter&rfr_id=info%3Asid%2Fen.wikipedia.org%3AM45+Quadmount" class="Z3988"></span></span> </li> <li id="cite_note-RottmanBrowning-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-RottmanBrowning_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-RottmanBrowning_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-RottmanBrowning_2-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-RottmanBrowning_2-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text">Rottman, Gordon L., <i><a rel="nofollow" class="external text" href="https://books.google.com/books?id=TaixfxwdCwEC&pg=PA20">Browning .50-Caliber Machine Guns</a></i>, Osprey Publishing (2010), <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9781849083317" title="Special:BookSources/9781849083317">9781849083317</a>, p. 19-20</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text">Zaloga, <i>M3 Infantry Half Track</i>, Osprey Publishing (2004) p. 38.</span> </li> <li id="cite_note-Green150-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-Green150_4-0">^</a></b></span> <span class="reference-text">Green (2000), p. 150.</span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text">Chamberlain & Ellis (1969) <i>British and American Tanks of World War II</i> Arco Publishing. p191</span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text">Chamberlain & Ellis (1969) p89-90</span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.researcheratlarge.com/Ships/CV16/AAReport/index.html">"RAL - USS Lexington report on Service Experience with Six Caliber .50 Gun Mounts, Mark 31 Mod 0"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180924163611/http://www.researcheratlarge.com/Ships/CV16/AAReport/index.html">Archived</a> from the original on 2018-09-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2017-08-17</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=RAL+-+USS+Lexington+report+on+Service+Experience+with+Six+Caliber+.50+Gun+Mounts%2C+Mark+31+Mod+0&rft_id=http%3A%2F%2Fwww.researcheratlarge.com%2FShips%2FCV16%2FAAReport%2Findex.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AM45+Quadmount" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFRottman2011" class="citation book cs1">Rottman, Gordon L. (20 Sep 2011). <i>Vietnam Gun Trucks</i>. New Vanguard 184. Osprey Publishing. p. 36. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9781849083553" title="Special:BookSources/9781849083553"><bdi>9781849083553</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Vietnam+Gun+Trucks&rft.series=New+Vanguard+184&rft.pages=36&rft.pub=Osprey+Publishing&rft.date=2011-09-20&rft.isbn=9781849083553&rft.aulast=Rottman&rft.aufirst=Gordon+L.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AM45+Quadmount" class="Z3988"></span></span> </li> <li id="cite_note-wehrmacht-awards-9"><span class="mw-cite-backlink">^ <a href="#cite_ref-wehrmacht-awards_9-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-wehrmacht-awards_9-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.wehrmacht-awards.com/forums/showthread.php?t=764040">"1° Groupe d'Artillerie Antiaérienne Coloniale d'Extrême-Orient - Wehrmacht-Awards.com Militaria Forums"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20161020040317/http://www.wehrmacht-awards.com/forums/showthread.php?t=764040">Archived</a> from the original on 2016-10-20<span class="reference-accessdate">. Retrieved <span class="nowrap">2016-10-19</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=1%C2%B0+Groupe+d%27Artillerie+Antia%C3%A9rienne+Coloniale+d%27Extr%C3%AAme-Orient+-+Wehrmacht-Awards.com+Militaria+Forums&rft_id=http%3A%2F%2Fwww.wehrmacht-awards.com%2Fforums%2Fshowthread.php%3Ft%3D764040&rfr_id=info%3Asid%2Fen.wikipedia.org%3AM45+Quadmount" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.reddit.com/r/shittytechnicals/comments/18ubah6/ecuadorian_army_with_their_collection_of_m45/?rdt=36745">Ecuadorian Army with their Collection of M45 QUADMOUNT based technicals, made on the flatbed of UNIMOG and HUMVEE trucks.</a></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.armyvehicles.dk/bdql_cad.htm">Photo of a Danish Army Bedford QLD lorry with a M55 Machine Gun Trailer Mount on top.</a></span> </li> <li id="cite_note-Janes87-88armorarty-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-Janes87-88armorarty_12-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFFoss1987" class="citation book cs1">Foss, Christopher (1987). <i>Janes Armour and Artillery 1987-1988</i>. <a href="/wiki/Janes_Information_Services" title="Janes Information Services">Janes Information Services</a>. p. 719. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0710608497" title="Special:BookSources/0710608497"><bdi>0710608497</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Janes+Armour+and+Artillery+1987-1988&rft.pages=719&rft.pub=Janes+Information+Services&rft.date=1987&rft.isbn=0710608497&rft.aulast=Foss&rft.aufirst=Christopher&rfr_id=info%3Asid%2Fen.wikipedia.org%3AM45+Quadmount" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.facebook.com/SentinelMexico1/photos/sistema-antia%C3%A9reo-de-montaje-cu%C3%A1druple-maxson-m45-quadmountesta-imagen-la-encont/1538519149585066/?locale=fr_FR&_rdr">Sistema antiaéreo de montaje cuádruple Maxson M45 Quadmount (Sentinel México).</a></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.pond5.com/pt/stock-footage/item/275354254-vintage-m45-quadmount-antiaircraft-tank-display-royal-tank-m">Vintage M45 Quadmount Antiaircraft Tank Display At Royal Tank Museum In Jordan Video.</a></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M45_Quadmount&action=edit&section=9" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Training Manuals </p> <ul><li><a href="//archive.org/details/TM9-2800" class="extiw" title="iarchive:TM9-2800">TM 9-2800 Military vehicles</a></li> <li>TM 9-2010</li> <li>TM 9-1223</li> <li>FM 44-57</li></ul> <p><b>M20 trailer</b> </p> <ul><li>SNL G220</li> <li>TM 9-789</li></ul> <p><b>M17 trailer</b> </p> <ul><li>SNL G221</li> <li><a rel="nofollow" class="external text" href="https://www.scribd.com/doc/173634669/TM-9-881">TM 9-881</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M45_Quadmount&action=edit&section=10" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://www.scribd.com/doc/28274775/Quad-50-TM9-222-Multiple-Cal-50-MG-Mount-M45">Scribd's Archived M45 Quadmount Manual</a></li> <li><a rel="nofollow" class="external text" href="http://www.robertsarmory.com/quad.htm">M45 Quadmount</a></li> <li><a rel="nofollow" class="external text" href="http://www.skylighters.org/quad50/index.html">Part I: The "Quad 50" Machine Gun Mount</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20081222001357/http://www.skylighters.org/quad50/index.html">Archived</a> 2008-12-22 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20081202023641/http://www.rt66.com/~korteng/SmallArms/50quad.htm">Rt66.com</a></li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=M45_Quadmount&oldid=1274348775">https://en.wikipedia.org/w/index.php?title=M45_Quadmount&oldid=1274348775</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Anti-aircraft_guns_of_the_United_States" title="Category:Anti-aircraft guns of the United States">Anti-aircraft 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