Abstract: Disclosed is a hand guard attachment system. The system in one form comprising a barrel nut affixed to an upper receiver of the firearm and a jam nut each with a threaded outer surface aligned with and co-axial to a bore of the firearm. The rapid configuration system may include a plurality of indexing pins aligned with, but not coaxial to the bore of the firearm. The hand guard may include an inner threaded surface where the threads cooperate with the threads of the jam nut and barrel nut. A method for attachment of the hand guard to the firearm is also disclosed. The method in one form including the steps of: threading the hand guard onto the jam nut and barrel nut; and tensioning the set screws. The method may include a step where the set screws are adjusted to manipulate the angle of the hand guard relative to the bore.