Patent ID: 6959509
Filing Date: 2005-11-01
Classification: F41A

Abstract:
1. An assembly system for connecting a rifle barrel to an upper receiver portion of a rifle said assembly system comprising three separate pieces: a first piece, a barrel nut, said barrel nut being a generally cylindrically shaped piece defining a generally longitudinal bore extending from a first end along a longitudinal axis to a second end, said bore having a threaded first portion configured to connect with said upper receiver portion of said rifle, said bore also configured to hold a rifle barrel within said barrel nut, said barrel nut further comprising circumvolving grooves configured to engage a lock nut upon an outer surface of said barrel nut; a second piece, a gas tube and hand guard support ring configured for non-engaging placement over said barrel nut, said gas tube and band guard support ring having a pair of tabs extending from said support ring, said tabs configured to allow said gas tube and hand guard support ring to align in a desired location upon said upper receiver portion of said rifle; and a third piece, a threaded lock nut configured for connection with said barrel nut, said lock nut configured to compressively engage and hold said support ring in a desired removable position between said threaded lock nut and said upper portion of said rifle.