The Military Armament Corporation Model 10, officially abbreviated as "M10" or "M-10",[5] and more commonly known as the MAC-10, is a compact, blowback operated machine pistol/submachine gun that was developed by Gordon Ingram in 1964.

[6] Military Armament Corporation never used the "MAC-10" nomenclature in its catalogues or sales literature, but "MAC-10" is frequently used by Title II dealers, gun writers, and collectors.

[8] The primary reason for the original M10 finding recognition was its revolutionary sound suppressor designed by Mitchell WerBell III of Sionics.

The suppressor, when used with a Nomex cover, creates a place to hold the firearm with the secondary hand, making it easier to control.

Law enforcement bureaucracies such as the Minnesota Bureau of Criminal Apprehension (BCA) consider MAC-11 variants such as the Leinad PM-11 to be part of the "MAC-10 class pistol".

[12] Today, while the civilian manufacture, sale and possession of post-1986 select-fire MAC-10 and variants is prohibited, it is still legal to sell templates, tooling and manuals to complete such conversions.

These items are typically marketed as being "post-sample" materials for use by Federal Firearm Licensees for manufacturing/distributing select-fire variants of the MAC-10 to law enforcement, military and overseas customers.

[13] The semi-automatic civilian pistol version of the MAC-10, which operates differently from its military counterpart, fell under the 1994 Assault Weapons Ban.

[15] The BXP is a 9 mm submachine gun developed in the mid-1980s by the South African company Mechem (currently a division of Denel, formerly under ARMSCOR) and brought into production in 1984.

Due to international arms embargoes of Apartheid South Africa, the country was forced to design and manufacture their own weapons.

[17] A similar earlier Argentine weapon based on the MAC-10 was also designed in 1977 by manufacturer Domingo Matheu, the Pistola Ametralladora MPA.