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The M3 is an American .45-caliber submachine gun adopted by the U.S. Army on 12 December 1942, as the United States Submachine Gun, Cal. .45, M3. [12] The M3 was chambered for the same .45 ACP round fired by the Thompson submachine gun , but was cheaper to mass produce and lighter, at the expense of accuracy. [ 12 ]
The designers of the American M3 "Grease Gun" examined British Sten guns and captured MP 40s for usable construction details. The folding stock became the model for those on later weapons, such as the Soviet PPS-43 and the AKS version of the AK-47 .
It succeeded at both goals, but it was almost immediately replaced by the cheaper grease gun. Used 20-round or 30-round Thompson magazines. M3 and M3A1 submachine gun: Submachine gun Close-quarters, personal security: Blowback, open bolt United States: General Motors.45 ACP: 91 450 1943 655363 3.61-3.70 30-round magazine. M50 Reising submachine ...
Lettet–Forsøgs submachine gun: Dansk Industri Syndikat: 9×19mm Parabellum Denmark: 1941 SMG Lmg-Pist 41/44: Waffenfabrik Bern: 7.65×21mm Parabellum Switzerland: 1941 MP Lusa submachine gun: INDEP: 9×19mm Parabellum Portugal: 1983 SMG M2 Hyde: Marlin Firearms.45 ACP United States: 1942 SMG M3 Grease Gun: General Motors.45 ACP 9×19mm ...
The Rock Island Arsenal headed up the project working with the M3 submachine gun (a World War II-era SMG), a Firing Port Weapon created by Heckler & Koch based on the HK33, and a modified M16 rifle pattern weapon. The qualities of the M16 were the most promising, and by 1974 it had been designated the XM231.
The MAC-10 fires from an open bolt, and the light weight of the bolt results in a rapid rate of fire. In addition, this design incorporates a built-in feed ramp as part of the trigger guard (a new concept at the time) and, to save on cost, the magazine design was recycled from the M3 Grease Gun.
This is a common feature in basic submachine guns like the Sten gun or M3 "Grease Gun", and even some machine guns. With a fixed firing pin, when the bolt is closed gently, without the momentum of the bolt closing at normal speed, there is not enough force imparted to the firing pin to ignite the primer.
The M1944 Hyde sub-machine gun came with an uncommon quick-change barrel system. The bolt is similar to the Solothurn MP-34, where the spring is contained within the buttstock. Photos of the Hyde gun appeared in the first edition of The World’s Assault Rifles by Daniel Musgrave and Thomas B. Nelson, published in 1967. No known examples of the ...