The Revolution(TM) is POFs new .308 rifle that handles like a 5.56. The Revolution features many 5.56 parts; such as charging handle, bolt carrier, cam pin, buffer, heat sink barrel nut, handguard, and 5-position gas piston operating system. The barrel extension, bolt assembly, upper, and lower receiver are the exact same size as those on an AR15.Features :Edge HandguardFully Ambidextrous Billet Receiver Set5-Position Gas PistonSingle Stage Match Grade Trigger