The primary reason for the original M-10 finding recognition was its revolutionary sound suppressor designed by Mitchell Werbell III of Sionics. Ingram added a small bracket with a small strap beneath the muzzle to aid in controlling recoil during fully automatic fire. At the suggestion of the United States Army, it also acted as a foregrip to inhibit muzzle rise when fired. The barrel is threaded to accept a suppressor, which worked by reducing the discharge's sound, without attempting to reduce the velocity of the bullet or rather stops air from rushing into the barrel, inhibiting the sonic signature. In addition, this design incorporates a built in feed ramp as part of the trigger guard (a new concept at the time) and to save on cost the magazine was recycled from the M3 Grease Gun. The M-10 fires from an open bolt, and in addition, the light weight of the bolt results in a rapid rate of fire. This allows a more compact weapon, and balances the weight of the weapon over the pistol grip where the magazine is located. The M-10 has a telescoping bolt, which wraps around the barrel. A notched cocking handle protrudes from the top of the receiver, and by turning the handle 90° would lock the bolt, and act as an indicator that the weapon is unable to fire. The M-10 was built predominantly from steel stampings. The MAC-10 ( Military Armament Corporation Model 10, officially the M-10) is a highly compact, blowback operated machine pistol developed by Gordon B.
MAC-10 (.45 ACP) with suppressor and without magazine.Ģ.84 kg (6.26 pounds) empty w/o suppressorĢ95 mm (11.6 inches) with stock retractedĥ48 mm (1 foot 9.6 inches) with stock extendedĥ45 mm (1 foot 9.45 inches) with stock retracted w/suppressorħ98 mm (2 feet 7.4 inches) with stock extended w/suppressorģ0-round detachable box magazine (.45 ACP)