American Tactical Alpha-15 - Semi-automatic Rifle - 223 Remington/556NATO - 16" Pencil Profile Barrel - 1:8 Twist - Matte Finish - Black - Polymer Grip - Collapsible Stock - Front/Rear Flip Up Sights - 30 Rounds - 1 Magazine - 8" Mlok Rail - Nano Composite Trigger kit - Carbon Fiber Infused Buffer Tube ATIGALP556M8