Patent ID: 8245626
Filing Date: 2012-08-21
Classification: F41A,Y10T

Abstract:
1. A direct gas impingement operating system for an automatic or semi-automatic rifle, comprising: a barrel connected to a receiver; a gas block fitted to the barrel, the gas block in fluid communication with a bore of the barrel; a gas regulating sleeve removably located in the gas block, the gas sleeve in fluid communication with the bore of the barrel; a bolt assembly configured for movement between a first position and a second position, the bolt assembly having an integral impingement cylinder; and a gas line fixed to the sleeve, the gas line being in fluid communication with the bore via the sleeve and the gas block, and wherein a portion of the gas line is received within the impingement cylinder when the bolt assembly is in the first position and the impingement cylinder moves away from the gas line when it moves from the first position to the second position; and wherein gas discharged from a fired cartridge moves the impingement cylinder from the first position to the second position displacing the bolt assembly relative to the receiver, and wherein, the sleeve and the gas line are removable from the gas block without disconnecting the barrel from the receiver and without removal of the gas block from the barrel.