Receiver set: Forged - Effective range: 800 Yards - Caliber: 5.56 NATO - Barrel: 16 1:7T Gov Profile 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed - Muzzle: A2 Flash Hider - Trigger: Mil-STD Fire Control Group - Mil-STD Safety Selector - Gas System: Low Profile Gas Block mid-length gas tube - Buffer System: Carbine H Buffer Assembly - Bolt Carrier Group: Full auto Cut & Rated properly staked gas key - Handguard: 14.75 M Lok CNC Machined of 6061-T6 Aluminum with integrated QD mounts - Charging Handle: Mil-STD - Stock: B5 Systems Enhanced SOPMOD 6 Position adjustable w/ QD Mount - Pistol Grip: B5 Systems Textured Black Polymer - Magazine: 30 Round