MAC-11

MAC-11
The MAC-11A1 without a magazine and the stock folded
Type	Submachine gun Machine pistol
Place of origin	United States
Service history
In service	1972–1975
Used by	Argentina Colombia Greece Guatemala Slovenia South Korea Taiwan Venezuela
Production history
Designer	Gordon Ingram
Designed	1972
Manufacturer	Military Armament Corporation Cobray Company RPB, SWD Inc. Jersey Arms Leinad MasterPiece Arms
Produced	1972–present
Variants	MAC-11A1 MAC-11/9
Specifications
Weight	1.59 kg (3.50 lbs)
Length	248 mm (531 mm stock extended) (9.76 in/20.90 in)
Barrel length	129 mm
Cartridge	.380 ACP
Action	Straight Blowback
Rate of fire	1200 /min
Muzzle velocity	980 ft/s
Effective firing range	50 m
Feed system	16 or 32-rounds box magazine
Sights	Iron sights

The Ingram MAC-11 (Military Armament Corporation Model 11) is a subcompact machine pistol developed by American gun designer Gordon Ingram at the Military Armament Corporation (MAC) during the 1970s. The weapon is a sub-compact version of the Model 10 (MAC-10), and is chambered to fire the smaller .380 ACP round.

This weapon is sometimes confused with the Sylvia & Wayne Daniels M-11/9 or the Vulcan M-11-9, both of which are later variants of the MAC chambered for 9 mm Luger Parabellum cartridge. Cobray also made a .380 ACP variant called the M12.

A 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. Though wipes are less durable than reflex baffles, they had the advantage of proving quieter for the MAC-11. The suppressor is 224mm in length and is covered with Nomex-A heat-resistant material.

Like the larger M-10, the M-11 has open sights with the rear pinhole sight welded to the receiver. These sights are for use with the folding stock, as using them without the stock is nearly useless because of the initial jump of the weapon due to its heavy, open-bolt design. The M-11A1 also has two safety features which are also found on the Model 10A1. The charging handle rotates to 90 degrees to lock the bolt in the forward position thus preventing the weapon from being cocked. The second safety is a slider which is pushed forward to lock the trigger, which in turn pins the bolt to the rear (cocked) position. This prevents the weapon from discharging even when dropped, which is not uncommon with an open-bolt design.

The rate of fire of the M-11A1 is one of the biggest complaints on the firearm. 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. Rate of fire will also vary depending on the weight of bullets used. The gun also has a selector switch that allows it to fire only one round at a time in the semi-automatic mode.