UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps; CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized; BARREL: Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, 14.5" M4 Profile, Chrome Lined, Mil-Spec Heavy Phosphate Coated, and HP/MPI Tested; GAS SYSTEM: Pinned Low Profile Gas Block CNC Machined of 4140 hardened steel and Mil-Spec Heavy Phosphate Coating, Carbine length, Direct Impingement; MUZZLE DEVICE: Daniel Defense Extended Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished, pinned and welded to Barrel; BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key; SIGHTS: Sold Separately; HANDGUARD: Daniel Defense M4A1 Rail Interface System (RIS) II, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized; RAIL PANELS: Daniel Defense Rail Panels Made from Santoprene, Heat Resistant to 300 degrees F; FINISH: Flat Dark Earth