Patent ID: 9383149
Filing Date: 2016-07-05
CPC Classification: F41A

Claim Text:
1. A gas operating system for a firearm, comprising: a gas block including a piston bore and a series of gas ports in fluid communication with the piston bore and at least one barrel port of the firearm to enable passage of pressurized gases from firing into the piston bore; a compensating gas piston at least partially disposed in the piston bore, and comprising a piston body movable along the piston bore; a gas pressure relief valve disposed within the piston body, the relief valve configured to divert excess gases through the piston body to reduce a gas pressure acting on the piston and reduce velocity of a bolt of the firearm during cycling of the bolt; and a fluid path defined within the piston bore and configured to be in fluid communication with the series of gas ports of the gas block and the relief valve; wherein the pressurized gases are received along the fluid path so as to impinge upon and drive the piston, and wherein when a pressure of the pressurized gases is sufficiently in excess of a desired operating level, the gas pressure relief valve will be actuated to divert the excess gases through the piston body and to a vent.