The Military Armament Corporation Model 11, better known as the MAC 11 or M-11, is an American machine pistol.
The MAC 11 was used in service from 1972 to 1975, and of all known variants of the MAC series of firearms, the MAC 11 is the least commonly seen.
The MAC 11 is essentially a scaled-down version of the MAC 10, and as such, performs identically. The weapon's sights are open with a pinhole sight drilled into the rear of the receiver. The charging handle is located on the top of the receiver, and can be rotated 90° to lock it in place, thereby preventing the weapon from being charged. The MAC 11's safety is located forward of the trigger and is pushed forward to lock the trigger up, preventing one from firing the weapon. A known complaint about the MAC 11 is its ridiculous cyclic rate of 1200 rounds per minute, or 20 rounds per second, which allows the user to empty the magazine in a mere two seconds, though the rate of fire can be varied by using differently weighted bullets in the weapon. The MAC 11's absurdly high rate of fire also causes it to have rather poor accuracy, which led International Association of Police Chiefs weapons researcher David Steele to jokingly describe the MAC 11 as a weapon "only fit for combat inside a phone booth".