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The M45 Quadmount was a towed anti-aircraft gun consisting of four .50 caliber M2 Browning machine guns mounted in pairs on either side of an armored op-top gunner's compartmt with electrical laying. It was developed by the W. L. Maxson Corporation to replace the earlier M33 twin mount (also from Maxson).
Although designed as an anti-aircraft weapon, it was also used against ground targets, where it earned the nicknames meat chopper and Krautmower
Tennessee Museum Of Aviation 121
In order to develop a mobile anti-aircraft weapon, several 0.5 inch (12.7 mm) twin machine gun mounts were tested on the chassis of the M2 half-track including Bdix, Martin Aircraft Company, 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 M13 Multiple Gun Motor Carriage. The mount was also used on the similar M5 half track as the M14 Multiple Gun Motor Carriage.
Experimtally, the Quadmount was also tested in 1942 on a M3 Light Tank in place of the tank's turret but the project was terminated.
Ev 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.
Infantryman's War Atop Pork Chop Hill
The M45 Quadmount was the principal weapon (along with the 37mm gun) of highly mobile anti-aircraft artillery battalions deployed in the European Theater during World War II. These battalions provided invaluable air defse to much larger units, particularly field artillery. The M45 Quadmount units served as a very strong deterrt to strafing runs by emy 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 rate of fire (450–550 rounds per minute) for a single gun was too low for anti-aircraft use.
The M45 found use throughout the war as a land-based weapon, particularly during the Battle of the Bulge. Although the Allies achieved air supremacy by the invasion of Normandy in June 1944, German attack runs were still a threat. German Jabo fighter-bombers could approach and attack at low altitude and th quickly retreat to avoid Allied fighters. The Luftwaffe also mustered a large number of planes for Operation Bodplatte that took place on New Year's Day 1945.
It was also tested by the US Navy as a solution for the Kamikaze attacks that started in late 1944. Two Essex class aircraft carriers received six mounts each for operational testing starting with CV-16 Lexington in May 1945. The guns were too light and ineffective against the high speeds that the diving Kamikaze aircraft possessed.
The North Vietnamese .51 Caliber Copter Killer
The M45 Quadmount was ineffective against the new, fast-flying planes of the Jet Age. However, it was used against infantry targets in US post-war service. In Vietnam they were pressed into service to defd bases and to ride escort convoys along Viet Cong roads.
The Frch Army also used M45s in combat. M45 Quad Mounts were placed in trucks to deal with ambushes and four M45s were used during the Battle of Di Bi Phu.
The TCM-20 was a postwar Israeli developmt of the M45 mount, equipped with two 20mm Hispano-Suiza HS.404 cannons in lieu of machine guns. In frontline Israeli service, it was replaced by the M163 Vulcan Air Defse System in the 1970s, but some reserve units still used TCM-20s into the 1980s. The weapon was also exported to several third-world countries.
M16 Quad50 Half Track
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. Wh 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 d of World War II in favor of the M55.
During the Korean War, the M55 and M16 saw extsive 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 idtified by the lack of fold-down armor and rear troop door on the crew compartmt and were oft 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.
The M55 received a new, more powerful gerator in the 1960s and served through the Vietnam War, usually mounted in the back of an M35 2.5 ton or M54 5-ton gun trucks.
Afv Club Af35034 1/35 U.s. M35a1 Quad .50 Gun Truck
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 betwe -10 and +90 degrees. Traverse and elevation are electrically driv, powered by two rechargeable 6-volt batteries. All four guns could be fired at once, but standard practice was to alternate betwe 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 lessed.
The tombstone model M2 ammunition chests held 200 rounds each—with one ammunition chest on an M45 system holding t times as many rounds as each of the four twty-round 20mm magazines of the German Flakvierling system held (and which, on the German ordnance system, had to be changed every six seconds on each gun of the quartet to sure its own top 800 rpm combined firing rate), with each M2 ammo chest weighing 89 pounds each wh full.Quad M2 .50-caliber Machine Gun Mount Mounting 4 standard Browning Caliber .50 heavy barrel machine guns, the Quad-50 was primarily an anti-vehicle weapon but, against assaulting infantry, it was a battlefield broom. Selective Fire; recoil operated, air cooled; each gun firing 400-550 710 gr bullets per minute, with an effective range of 2500 yards, it is easy to understand why it was such a fearsome weapon.
Heavy Barrel Air-Cooled Heavy Machine Guns Mounted on a half-track (M-16 Multiple Gun Motor Carriage), WWII AAA vintage, the above gun turret is power driven with four standard Browning .50 caliber M2 heavy barrel machine guns. The drum (Tombstone) magazines held 200 rounds each, and the four guns were fired in tandem by an electric trigger mechanism. Highly effective as an anti-aircraft weapon against strafing attacks in World War II, its primary deployment in Korea was as a devestating antipersonnel weapon. The Quad-50 was still used during the Vietnam War, in semi-fixed locations to protect the perimeter of fire bases, and very effectively on motor convoy support.
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White M3a1: The Whole Story Of The Half Track
The .50 caliber machine gun is primarily an anti-vehicular weapon. Its weight, and the weight of its ammunition, make it unsuitable for mobile infantry use. However, in semi-fixed positions such as the MLR in Korea, or mounted on vehicles in file, as in the withdrawal from Chosin, the weapon is magnificent. Its great range and striking power make it deadly in enfilade against troops staging for assault. Again, these capabilities make it ideal for quick reaction against machine gun and mortar positions on heights overlooking road communications. Against massed infantry attack over ground with relatively constant slope, as against the Chinese human wave assaults on our MLR such as at Vegas, the M2 is a truly terrible force. For mobile deployment, Quad .50s mounted on half-tracks are devastating, going over the hills like a vacuum cleaner.International shipment of items may be subject to customs processing and additional charges. International shipping - items may be subject to customs processing depending on the item's customs value. Sellers declare the item's customs value and must comply with customs declaration laws. As the buyer, you should be aware of possible: • Delays from customs inspection. • Import duties and taxes which buyers must pay. • Brokerage fees payable at the point of delivery. Your country's customs office can offer more details, or visit 's page on international trade.
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The M2 .50 Cal: Over 80 Years Of Service And Counting
“Size: 4-7/8 x 3-7/8 - Original amateur photo. Good condition with minor signs of wear. Minor ... Read moreabout the seller notes “Size: 4-7/8 x 3-7/8 - Original amateur photo. Good condition with minor
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