MAC-11
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The Military Armament Corporation Model 11, officially abbreviated as "M11" or "M-11", and commonly known as the MAC-11, is a machine pistol/submachine gun developed by American firearm designer Gordon Ingram at the Military Armament Corporation... Wikipedia
Designed: 1972; A prototype was in development in 1964 and 1965
Caliber: .380 ACP
Action: Straight blowback
Feed system: 16 or 32-round box magazine
In service: 1972–present
Length: 248 mm (531 mm stock extended) (9.76 in/20.90 in)
Manufacturer: Military Armament Corporation; Cobray Company; RPB; SWD Inc. Jersey Arms; Leinad; MasterPiece Arms