Machine pistol with retarded blowback

Details Machine pistol with retarded blowback Machine pistol with retarded blowback

F - Mech Eng,Light,Heat,Weapons

41

A

89/20

F41A 17/54 (2006.01) F41A 3/62 (2006.01) F41A 15/14 (2006.01)

Patent

CA 1233050

MACHINE PISTOL WITH RETARDED BLOWBACK ABSTRACT OF THE DISCLOSURE A machine pistol with means for retarding blow- back of the slide assembly. The device has both right hand and left hand stocks to enable the weapon to be fired from a comfortable visual sighting position at eye level with the wrist axes perpendicular to one another. The slide assembly includes a bolt that carries the fir- ing pin, extractor and ejector and that reciprocates rel- ative to the receiver and barrel, and a tubular cylindri- cal muzzle sleeve removably connected to the forward end of the bolt and that fits coaxially around the barrel. A coaxial helical spring fits between the barrel and muzzle sleeve to urge the muzzle sleeve (and bolt) to the for- ward firing position wherein the forward end of the muz- zle sleeve extends outwardly beyond the end of the bar- rel. A plurality of annular internal grooves are formed in the forward end of the muzzle sleeve so that the mo- mentum of the escaping gases immediately following firing exerts a force against the sidewalls of the grooves to retard blowback of the slide assembly.

466113

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