Patent ID: 11879700
Assignee: SAVAGE ARMS, INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 5:
6. A semiautomatic shotgun comprising:
a receiver defining a receiver interior;
a bolt assembly in the receiver interior, the bolt assembly having an in-battery position and an open position, the bolt assembly having componentry therein;
a magazine attached to the receiver;
a piston cylinder and an annular piston therein, the magazine tube, the piston sleeve, and the piston cylinder cooperating to define an annular piston volume, the annular piston operatively connecting to the bolt assembly for cycling the shotgun;
a pair of pressure regulators fluidly connecting to the annular piston volume,
the semiautomatic shotgun bolt assembly componentry being secured together by a plurality of retention pins, each retention pin having an O-ring thereon for securement of the respective pin.