

Venezuela: Known to be used by the Cuerpo de Investigaciones Científicas Penales y Criminalísticas (Scientific Penal and Criminal Investigations Corps).

MAC-type submachine guns and semi-automatic pistols were first manufactured by the Military Armament Corporation, and later by RPB Inc., Sylvia/Wayne Daniel Inc., Cobray, Jersey Arms, Leinad, MasterPiece Arms, and Vulcan. The suppressor is 224 mm in length and is covered with Nomex-A heat-resistant material. Though wipes are less durable than reflex baffles, they had the advantage of proving quieter for the MAC-11. Without proper training, the natural tendency of the inexperienced shooter is to hold down the trigger, discharging the entire magazine in little more than two seconds, often with poor accuracy due to recoil.Ī specific suppressor was developed for the MAC-11, which used wipes as baffles, instead of the reflex baffles that Mitchell WerBell III created for the MAC-10. At the MAC-11's high cyclic rate, extreme trigger discipline is required to discharge short bursts, which are required for combat effectiveness. The M-11 is the least common version in the MAC family of firearms. 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 approximately 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. The Minnesota Bureau of Criminal Apprehension (BCA) considers MAC-11 variants such as the Leinad PM-11 to be part of the "MAC-10 class pistol."

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 Ingram MAC-11 ( Military Armament Corporation Model 11) is a subcompact machine pistol/ submachine gun developed by American gun designer Gordon Ingram at the Military Armament Corporation (MAC) during the 1970s in Powder Springs, Georgia.
