Features: 5.56x45mm/.223 caliber Semi automatic action 30 +1 round capacity FDE Cerakote 16.5″ Barrel w/pinned and welded extension Stamped steel 1.5mm receiver with bulged trunnion Corrosion resistant hard nickle molly steel bolt carrier Hinged top cover Bolt hold-open notch on the safety selector Krinkov style rear, post front sights Magpul Pistol Grip Magpul RVG Vertical Grip Quad rail hanguard Weight is 8.3 Top rail Magpul CTR Stock Buffer Tube Adaptor