Patent ID: 8839545

Claim:
A firearm hand guard rapid configuration system comprising: a. a barrel nut affixed to an upper receiver of a firearm, the barrel nut in turn comprising: i. a threaded outer cylindrical surface aligned with and co-axial to a bore of the firearm; ii. a surface defining an inner cylindrical face aligned with and co-axial to a bore of the firearm; iii. a plurality of surfaces defining indexing voids aligned with but not coaxial to the bore of the firearm; iv. the indexing voids formed radially between the threaded outer surface and the inner cylindrical face of the barrel nut; b. a jam nut comprising: i. a threaded outer cylindrical surface aligned with and co-axial to a bore of the firearm, this surface having a thread diameter and thread pitch as the outer cylindrical surface of the barrel nut; ii. a surface defining an inner cylindrical face aligned with and co-axial to a bore of the firearm; iii. wherein the jam nut is longitudinally positionable relative to the barrel nut; c. a plurality of indexing pins have an outer diameter slightly smaller than the indexing voids of the barrel nut so as to insert therein; d. and e. a plurality of threaded set screw receivers aligned with but not coaxial to the bore of the firearm.