

Noting the weapon's poor accuracy, in the 1970s International Association of Police Chiefs weapons researcher David Steele described the MAC series as "fit only for combat in a phone booth." The gun also has a selector switch that allows it to fire only one round at a time in the semi-automatic mode.

Rate of fire will also vary depending on the weight of bullets used. Listed as 1,200 rpm (rounds per minute), the MAC-11 is capable of emptying the entire 32-round magazine in less than two seconds, which many users view as a drawback. The rate of fire of the M-11A1 is one of the biggest complaints on the firearm. MAC-11/9 with 32-round magazine and suppressor.

This weapon is sometimes confused with the Sylvia & Wayne Daniels M-11/9, its successor the Leinad PM-11, or the Vulcan M-11-9, both of which are later variants of the MAC chambered for the 9 mm Parabellum cartridge. The weapon is a sub-compact version of the Model 10 ( MAC-10), and is chambered to fire the smaller. The MAC-11 ( Military Armament Corporation Model 11) is a machine pistol developed by American firearm designer Gordon Ingram at the Military Armament Corporation (MAC) during the 1970s in Powder Springs, Georgia, United States.
