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|Model 11 Advancement 1 (M-11A1)|
Cobray MAC-11/9 with 32-round magazine and supressor
|Place of origin||United States|
|Wars||2013 Lahad Datu standoff|
|Designer||Gordon B. Ingram|
|Weight||1.59 kg (3.50 lbs)|
|Length||248 mm (531 mm stock extended) (9.76 in/20.90 in)|
|Barrel length||129 mm|
|Rate of fire||1200 rounds/min|
|Muzzle velocity||980 ft/s|
|Effective range||50 m|
|Feed system||16 or 32-rounds box magazine|
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.
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.
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 the 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 a typical problem with the open-bolt design.
The rate of fire of the M-11A1 is one of the biggest complaints on the firearm. Listed as approximately 1200 rpm (rounds per minute), though in reality, it is closer to 1600 rpm, the MAC-11 is capable of emptying the entire 32-round magazine in less than two seconds, which many users view as a setback. Rate of Fire will also vary depending on which grain of ammo is used.
The M-11 is the least-common version in the MAC family of firearms. This is mostly due to the .380 ACP round, which has a muzzle velocity of approximately 950 ft/s (290 m/s) and 200 ft·lbf (270 J) of energy, and is widely considered to have insufficient stopping power. At the MAC-11's high cyclic rate, extreme trigger discipline is required to discharge short bursts, which are required for combat expediency. Without proper training, the natural tendency of the inexperienced shooter is to hold down the trigger, discharging the entire magazine in little more than a second, often with poor accuracy due to recoil.
- ↑ Jones, Richard (2009). Jane's Infantry Weapons 2009-2010. Jane's Information Group. pp. 139. ISBN 0-7106-2869-2.
- ↑ "Ingram MAC Model 10 / M10 and Model 11 / M11 submachine guns (USA)". Official site. http://world.guns.ru/smg/usa/ingram-mac-m10-and-m11-e.html.
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