Systems For Firearms

摘要

Provided in one aspect is an annular gas ring within or adjacent a barrel to increase the efficient transfer of pressurized gas to one or more gas ports, which may communicate the high-pressure gas from near the chamber distally to a piston to cycle the action of the firearm. Provided in another aspect is a modular quick-disconnect barrel assembly for long-stroke gas-operated firearms such as the AK-47, which allows barrel and gas systems to be replaced together simply by pulling a single pin, thereby allowing the caliber of the firearm to be instantly changed to 12-gauge shotgun or any dimensionally smaller rifle or handgun round. A novel forward-charging handle system is also provided that works with the modular quick-disconnect barrel assembly.

主权项

1. A gas-operated firearm adapted to be cycled pneumatically by a piston assembly reciprocating longitudinally between a distal position and a proximal position in a cylinder when exposed to high-pressure gas from the firing of rounds, the gas-operated firearm comprising a hand-charging system comprising:
an elongated slot in a wall of the cylinder, the slot extending longitudinally from a distal portion of the wall proximally through an open gap in a proximal end of the wall; a first abutment fixedly connected with the longitudinally-reciprocating piston assembly, the first abutment protruding outwardly through the elongated slot; a charge handle structure slidably attached with an exterior surface of the cylinder and positioned to contact the first abutment and urge the longitudinally-reciprocating piston assembly in a proximal direction to charge the firearm when the charge handle structure is slid in a proximal direction; the charge handle structure adapted to return to a position distal of the first abutment and remain there during firing of rounds; wherein the cylinder is adapted to be removed from the firearm without disassembling the charge handle structure and without removing the charge handle structure from the cylinder.