DS-15 Billet Lower Receiver DSI Forged Upper Receiver w/ Forward Assit and Ejection Port Cover DSI M16 Bolt Carrier Group Magpul MOE 7" Drop-In Forearm DSI Aluminum Top & Bottom Rail Sight Block DSI Steel Micro Gas Block Pistol Gas System for Compatibility with Subsonic and Supersonic Ammo DSI 16" .300 Blackout Non Threaded 1:8 Nitride Barrel Thordsen FRS-15 Rifle Stock Thordsen Standard Buffer Tube Cover Magpul PMAG 10 Optic Ready (sights not included)