Barrel: - 18 HBAR 4150 CMV 1x10 Twist - Standard Gas System - DTI Low Profile Gas Block - Threaded Muzzle 5/8-24 A2 Flash Hider - Manganese Phosphated - Heavy Profile M4 Feed Ramps - Chamber: - 7.62 x 51 NATO - Bolt And Carrier: - Phosphated 8620 Steel Carrier Assembly - 9310 Bolt - Heat Treated and Plated - Mil-Spec - Chrome Lined Carrier Interior - Carrier Key - Chrome Lined attached with Grade 8 Screws - Properly Staked & Sealed Gas Key - Handguards: - 15'' MLOK Free Float Rail - Upper Receiver: - Forged 7075 T6 Aluminum - M4 Feeds Ramps with T-marks - Hard Coat Anodized - Ejection Port Cover and Round Forward Assist - Right Hand Ejection - Lower Receiver: - Forged 7075 T6 Aluminum - Hard Coat Anodized - Integrated Triggerguard - Semi-Auto - Aluminum Mag Catch Button - A2 Pistol Grip - Buttstock: - M4 Buttstock- Mil-Spec Diameter - H-Buffer - Included: - 1 x 20rd .308 Magpul PMag - Chamber Flag - Gun Lock