초록 ▼

A modified barrel for an automatic weapon having a muzzle attachment including a gas expansion chamber to permit use of a short barrel while delivering the normal pressure to the gas drive mechanism. The attachment delivers the gas pressure via a conduit from the chamber to an exit port coupled to t

A modified barrel for an automatic weapon having a muzzle attachment including a gas expansion chamber to permit use of a short barrel while delivering the normal pressure to the gas drive mechanism. The attachment delivers the gas pressure via a conduit from the chamber to an exit port coupled to the gas drive mechanism of the weapon.

대표청구항 ▼

[ I claim:] [1.] A modified barrel for a gas-operated automatic weapon of the type utilizing the expansion of gas in the barrel to actuate a gas drive mechanism which comprises:a) a barrel containing a bore with a longitudinal axis therein, said barrel having a distal end for receiving a muzzle atta

[ I claim:] [1.] A modified barrel for a gas-operated automatic weapon of the type utilizing the expansion of gas in the barrel to actuate a gas drive mechanism which comprises:a) a barrel containing a bore with a longitudinal axis therein, said barrel having a distal end for receiving a muzzle attachment and a proximal end for affixation to a receiver of said automatic weapon;b) a muzzle assembly for attachment to the distal end of the barrel, said assembly including:i. a housing having first and second ends with a central passage extending therebetween, said central passage being aligned with the longitudinal axis of the bore;ii. a sight rail located on said housing and aligned with said axis;iii. an expansion chamber contained in said housing and communicating with the central passage;iv. an external port located in the sight rail for connection to said gas drive mechanism;v. a gas conduit formed in said housing and said sight rail, said conduit extending between the external port and the expansion chamber; andc) means for attaching the first end of the housing to the distal end of said barrel in sealing engagement therewith whereby an increase in gas pressure generated by the firing of the weapon is modified by the expansion chamber.