MAC-11

{{Infobox weapon

| name = Military Armaments Corporation M11

| image = File:Flickr - ~Steve Z~ - Cobray M11.jpg

| image_size = 300px

| alt =

| caption = A Cobray M-11/NINE, a variant of the MAC-11

| origin = United States

| type = Machine pistol
Submachine gun

| is_ranged = Yes

| is_bladed =

| is_explosive =

| is_artillery =

| is_vehicle =

| is_missile =

| is_UK =

| service = 1972–present

| used_by = See Users

| wars = Lebanese Civil War

| designer = Gordon Ingram

| design_date = 1972

A prototype was in development in 1964 and 1965

| manufacturer = {{plainlist|

Military Armament Corporation
Cobray Company
RPB
SWD Inc.
Jersey Arms
Leinad
MasterPiece Arms

}}

| unit_cost =

| production_date = 1972–present

| number =

| variants = MAC-11A1
MAC-11/9

| spec_label =

| weight = 1.59 kg (3.50 lbs)

| length = 248 mm (531 mm stock extended) (9.76 in/20.90 in)

| part_length = 129 mm (5.08 in)

| width =

| height =

| diameter =

| cartridge = .380 ACP (9×17mm)
9×19mm Parabellum

| cartridge_weight =

| barrels =

| action = Straight blowback

| rate = 1200 rounds/min

| velocity = {{cvt|980|ft/s|m/s}}

| range = * 50 meters (.380 ACP)

70 meters (9×19mm Parabellum){{cite web |url=http://www.weapon.ge/index.php?sel=1&id=398&man=3&coun=32&cat=&l=en |title=MAC Ingram M10 / M11 (USA) |publisher=Weapon.ge – Modern Firearms Encyclopedia |access-date=11 June 2011}}

| max_range =

| feed = 16 or 32-round box magazine{{cite book|last = Hogg| first = Ian| title = Jane's Infantry Weapons 1989-90, 15th Edition | publisher = Jane's Information Group| year = 1989| isbn =0-7106-0889-6| page =117}}{{cite web |url=http://stevespages.com/pdf/mac_10.pdf |title=Operation and Maintenance Manual: Military Armament Corporation |publisher=Military Armament Corporation|pages=2, 5, 28}}

| sights = Iron sights

}}

The Military Armament Corporation Model 11, officially abbreviated as "M11" or "M-11", and commonly known as the MAC-11, is a machine pistol/submachine gun developed by American firearm designer Gordon Ingram at the Military Armament Corporation (MAC) during the 1970s in Powder Springs, Georgia, United States.CURRENT FIREARM DESIGNS AND AMMUNITION PRODUCTION METHODS DEVELOPED BY GORDON B. INGRAM 1 November 1977{{cite book |page=103 |title=The Mac Man: Gordon B. Ingram and His Submachine Guns |author=Frank Iannamico|isbn=978-0-9823918-1-5}}{{cite book |title=Assault Weapons |author=Jack Lewis |page=76 |year=2004 |publisher=Krause}} 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, 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.{{cite book|last = Jones| first = Richard| title = Jane's Infantry Weapons 2009-2010 | publisher = Jane's Information Group| year = 2009| isbn =978-0-7106-2869-5 | pages =139}} Cobray also made a .380 ACP variant called the M12.{{cite book|page=[https://archive.org/details/officialgundiges0000unse/page/235 235] |title=The Gun Digest Book of Guns & Prices 2011|isbn=978-1440235436|author=Jerry Lee|year=2011|publisher=Gun Digest Books|url-access=registration|url=https://archive.org/details/officialgundiges0000unse/page/235}}

Design

File:MAC11.jpg

=Operation=

Like the larger M-10, the M-11 has iron 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 that 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.

=Performance=

The rate of fire of the M-11A1 is one of the biggest complaints about the firearm. Listed as 1,200 rounds per minute, the MAC-11's high cyclic rate is able to empty the entire 32-round magazine in about two seconds, which many users view as a drawback.{{Cite news | title = Ingram MAC Model 10 / M10 and Model 11 / M11 submachine guns (USA) | publisher = Official site | url = http://world.guns.ru/smg/usa/ingram-mac-m10-and-m11-e.html }} Extreme trigger discipline is required to discharge short bursts, which are required for combat effectiveness. Without proper training, the natural tendency of the inexperienced shooter is to hold down the trigger, discharging the entire magazine, often with poor accuracy due to recoil. The rate of fire also varies depending on the weight of bullets used.{{cn|date=April 2023}} The gun also has a selector switch that allows it to fire only one round at a time in semi-automatic mode.

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".{{cite book|author=Jack Lewis|title=Assault Weapons|url=https://books.google.com/books?id=s2AbzqChZBYC&pg=PA79|date=28 February 2011|publisher=Gun Digest Books|isbn=978-1-4402-2400-3|pages=79–}}

The M-11 is the least common version in the MAC family of firearms.{{cn|date=April 2023}}

=Sound suppressor=

Image:Flickr - ~Steve Z~ - Cobray M11 (1).jpg

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 {{convert|224|mm|in|abbr=on}} long and is covered with Nomex, a heat-resistant material.

Manufacturers

MAC-type submachine guns and semi-automatic pistols were first manufactured by the Military Armament Corporation, and later by RPB Inc.,{{cite journal |last= Iannamico |first= Ian |title=Manufacturing History of Ingram-MAC Type Firearms |journal=Small Arms Review |publisher=Chipotle Publishing, LLC |volume=20 |issue=1 |pages= 104}} Cobray (later named Leinad, then Sylvia/Wayne Daniel Inc.), Jersey Arms, MasterPiece Arms,{{cite book|title=Cartridges and Firearm Identification|author= Walker, Robert E. |isbn=978-1466502062|year=2012|publisher=CRC Press|pages=216, 241, 322}} and Vulcan.

Users

{{flag|Argentina}}: In 1972, 20 were acquired for police and intelligence services. A further 24 were acquired for the Army and air force in 1973.{{Cite web |date=2016-11-24 |title=wiw_sa_argentina - worldinventory |url=https://sites.google.com/site/worldinventory/wiw_sa_argentina |access-date=2023-02-28 |archive-url=https://web.archive.org/web/20161124203421/https://sites.google.com/site/worldinventory/wiw_sa_argentina |archive-date=24 November 2016 }}
{{flag|Brazil}}: SWD M11/9 formerly used by GRUMEC{{cite book|title=Enciclopedia De Submetralhadoras|first=Ronaldo|last=Olive|page=272}}
{{flag|Colombia

}}: 25 acquired by police forces in the 1970s{{Cite web |date=2016-03-12 |title=wiw_sa_colombia - worldinventory |url=https://sites.google.com/site/worldinventory/wiw_sa_colombia |access-date=2023-03-14 |archive-url=https://web.archive.org/web/20160312062339/https://sites.google.com/site/worldinventory/wiw_sa_colombia |archive-date=12 March 2016 }}

{{flag|Chile}}: Cobray M11/9 formerly used by special forces{{Cite web |date=2015-05-18 |title=wiw_sa_chile - worldinventory |url=https://sites.google.com/site/worldinventory/wiw_sa_chile |access-date=2023-03-14 |archive-url=https://web.archive.org/web/20150518231807/https://sites.google.com/site/worldinventory/wiw_sa_chile |archive-date=18 May 2015 }}
{{flag|Dominican Republic}}{{Cite web |date=2016-11-24 |title=wiw_sa_dominicanrepublic - worldinventory |url=https://sites.google.com/site/worldinventory/wiw_sa_dominicanrepublic |access-date=2023-03-14 |archive-url=https://web.archive.org/web/20161124203428/https://sites.google.com/site/worldinventory/wiw_sa_dominicanrepublic |archive-date=24 November 2016 }}
{{flag|Guatemala}}: 135 acquired for police forces in 1973{{Cite web |date=2016-11-24 |title=wiw_sa_guatemala - worldinventory |url=https://sites.google.com/site/worldinventory/wiw_sa_guatemala |access-date=2023-03-14 |archive-url=https://web.archive.org/web/20161124203356/https://sites.google.com/site/worldinventory/wiw_sa_guatemala |archive-date=24 November 2016 }}
{{flag|Haiti}}{{Cite web |date=2016-11-24 |title=wiw_sa_haiti - worldinventory |url=https://sites.google.com/site/worldinventory/wiw_sa_haiti |access-date=2023-03-14 |archive-url=https://web.archive.org/web/20161124203357/https://sites.google.com/site/worldinventory/wiw_sa_haiti |archive-date=24 November 2016 }}
{{flag|South Korea}}: 28 acquired for special forces in the 1970s{{Cite web |date=2015-12-30 |title=wiw_as_koreasouth - worldinventory |url=http://sites.google.com/site/worldinventory/wiw_as_koreasouth |access-date=2023-03-15 |archive-url=https://web.archive.org/web/20151230033527/http://sites.google.com/site/worldinventory/wiw_as_koreasouth |archive-date=30 December 2015 }}
{{flag|Slovenia}}{{Cite web |date=2016-11-24 |title=wiw_eu_slovenia - worldinventory |url=https://sites.google.com/site/worldinventory/wiw_eu_slovenia |access-date=2023-03-14 |archive-url=https://web.archive.org/web/20161124202711/https://sites.google.com/site/worldinventory/wiw_eu_slovenia |archive-date=24 November 2016 }}
{{flag|Venezuela}}: Known to be used by the Cuerpo de Investigaciones Científicas Penales y Criminalísticas (Scientific Penal and Criminal Investigations Corps).{{Cite web|title=Early Colt SP1 self-loading rifle in Venezuela – Armament Research Services|url=https://armamentresearch.com/early-colt-sp1-self-loading-rifle-in-venezuela/|access-date=2021-01-29|language=en-GB}}

=Non-state users=

{{flagicon image|Forces_Libanaises_Flag.svg}} Lebanese Forces{{Cite web |date=2016-03-03 |title=Lebanese Forces : The Weapons: Sub Machine Guns (SMG) |url=http://www.lebaneseforces.com/wsmg.asp |access-date=2022-11-23 |archive-url=https://web.archive.org/web/20160303174221/http://www.lebaneseforces.com/wsmg.asp |archive-date=3 March 2016 }}

References

Sources

Stepan, Randal; Nolan Wilson, Gary Reisewitz (1989). [http://www.firearmsid.com/Feature%20Articles/012001/Mac10History.htm Mac-10 Cookbook. Arkansas: Desert Publications.]