Abstract: A gas-operated semi-automatic rifle having a barrel group, a receiver group, a bolt group, a stock group, a trigger group, and a magazine group. The barrel group includes a gas-operated operating rod, the operating rod further including a follower rod, the operating rod being biased away from the follower rod. The receiver group includes a receiver body. A cavity is formed in a forward portion of the receiver body, the cavity being sized and shaped to receive and movably retain a proximal end of the follower rod.

Abstract: The current invention is a semi-automatic rifle, of the detachable magazine fed, air cooled, gas driven type. The rifle uses some parts from The M1 Garand Rifle U.S. Pat. No. 1,892,141, but differs in method of feeding, bolt operation, barrel design, receiver design, sight systems, and gas system design, therefore requiring a new patent application. The rifle solves shortcomings of the M1 rifle by the upgrading of the listed functions to enhance the rifle's use for the modern shooter.

Abstract: The current invention is an improvement upon the M1 Garand semiautomatic rifle U.S. Pat. No. 1,892,141, and is related to the sighting and feed mechanism of that rifle. The M1 Garand semiautomatic rifle U.S. Pat. No. 1,892,141 has a problem with only being able to be loaded with an enbloc clip and not being able to mount a center line optical sight or other devices over the receiver of the rifle. The invention solves this problem by producing a trigger housing assembly, box magazine assembly, op-rod spring guide, operating rod catch and spring, and scope mount/rail as a unified system or kit for the rifle, that all function on the rifle without permanent alteration of the existing receiver or barrel.