Firearm having a hybrid indirect gas operating system

摘要

An automatic or semi-automatic rifle. The rifle has a receiver and a bolt having a striking surface, the bolt enclosed within the receiver. A barrel has a bore, the barrel coupled to the receiver. An indirect gas operating system has a cylinder and a piston, the indirect gas operating system mounted with a mounting structure substantially independent of the barrel. The cylinder is in communication with the bore, and the piston is fitted to the cylinder and disposed for striking the striking surface and displacing the bolt assembly.

主权项

1. An automatic or semi-automatic rifle comprising:
a receiver; a bolt assembly having a striking surface, the bolt assembly housed within the receiver; a barrel having a bore, the barrel coupled to the receiver; and an indirect gas operating system having a cylinder and a piston, wherein the cylinder and the piston are structurally coupled to the receiver and structurally decoupled from the barrel; wherein, the cylinder, the piston and the barrel are separately and independently mounted to the receiver so that they are structurally substantially independent from each other, and wherein the cylinder is in fluid communication with the bore, and wherein, the piston is fitted to the cylinder and disposed for striking the striking surface and displacing the bolt assembly and wherein the cylinder is isolated from deflection of the barrel, wherein the cylinder and the piston are independently removable from the rifle without further disassembly of the rifle other than removal of the cylinder and the piston from the rifle.