Patent ID: 8667883
Filing Date: 2014-03-11
Classification: F41A,F41C,F41G

Abstract:
1. A firearm having a gas piston system, the firearm comprising: a lower receiver, an upper receiver mounted to the lower receiver, a barrel mounted to the upper receiver, a handguard surrounding at least part of the barrel, an elongated mounting rail defining a first side and an opposite second side, the upper receiver extending from the second side of the elongated mounting rail, a gas piston housing operatively mounted to the barrel and positioned forward of the upper receiver, the gas piston housing slidably mounted to the second side of the elongated mounting rail, a piston and rod assembly operatively mounted to the gas piston housing and positioned above the barrel, the piston and rod assembly operatively connected to a bolt carrier disposed in the upper receiver, and a charging handle operatively connected to the bolt carrier, wherein the elongated mounting rail extends above and across and mounts and aligns the gas piston housing and piston and rod assembly.