The rifle is done in 300 blackout with a pistol gas system. Included is a 7.62x39 barrel mid length gas system and 7.62x39 Nitrate M16 7.62X39 bolt. With can be changed out easily. Also included is one 7.62x39 30 round magazine. The upper and lower are custom Lazer engraved. Anderson lower, spikes upper, The BCG is chrome m16. Spikes h2 buffer bolt, silicone spring for durability, hiperfire trigger that is a smooth 3lb. Magpul str stock, adjustable melonite gas block with melonite gas tube, rubber grip, 45 off set sights, the quad rail is carbon fiber by omega manufacturing. The 16in barrel is a ER Shaw 1/8 twist, nitrate finish, and a 50,000 shot rating and a lifetime warranty. Ampi saftey, extended mag release, custom superman take down pins. The muzzle break by simple threaded devices reduces recoil by not having side port's for quicker follow up shots and minimizing muzzle flash by a large portion. Reviews and video online are easily found. The stock is rated for an 11 drop stress test online done by a company. 11 drops at three feet before breaking. It also comes with 2 30rd pro mags. I am open to some trading. I'm a reasonable guy so please don't be shy to ask. Im open to shipping to ffl or travel in state.