We've worked Patriot magic into the Revolution by using a 5.56 bolt carrier and other 5.56 parts allowing for a shorter overall receiver size and reduced weight. This also isn't a normal small frame .308, it's smaller! It 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 Revolution features our new Edge Handguard with four built-in QD mounts, and is packed with all you've come to expect from POF-USA. Fully ambidextrous billet receiver set, nickel plated carrier, 5-position adjustable gas piston, single stage match grade trigger. - CALIBER .308 WIN/7.62 NATO - MAGAZINE (1) 20rd capacity - BARREL 18.5" CM Match Grade, Fluted - MUZZLE POF Triple Port Brake - HANDGUARD 14.5" Edge MRR M-LOK w/QD Ports - RECEIVER GEN 4 Billet Lower - TRIGGER Curved Face POF Non-adjustable - STOCK 6 Position MFT