Patent ID: 8726557

Claim:
A firearm comprising: a receiver having an integral multi-slot rail portion including at least one transverse slot formed along a top surface of the receiver; a barrel removably connected to the receiver; a forearm including a monolithic mounting rail/hand guard removably connected to the receiver wherein the monolithic rail/hand guard interfaces with the integral rail portion of the receiver; a cinch block having at least one projection adapted to engage and mate with the at least one transverse slot of the receiver, the cinch block configured to engage and be held in place by the monolithic rail/hand guard; a tension block mated with a rear end of the monolithic rail/hand guard and attached to the cinch block by a fastener wherein the mating engagement of the tension block with the monolithic rail/hand guard and the cinch block with the at least one transverse slot of the receiver removably secures the monolithic rail/hand guard to the receiver.