LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized; UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized; BARREL: Proprietary Blend of Stainless Steel, Cold Hammer Forged, 1:7″ twist, 18″ MK12 Profile, Salt Bath Nitride Finished, and HP/MPI tested; GAS SYSTEM: MK12 Low Profile Gas Block CNC Machined of hardened 416 stainless steel with Black Oxide Coating, Rifle-Length, Direct Impingement; MUZZLE DEVICE: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished; BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key; HANDGUARD: Daniel Defense DDM4 Rail 12.0, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized; RECEIVER EXTENSION: 6 Position Mil-Spec 7075-T6 Aluminum; BUTTSTOCK/PISTOL GRIP: Daniel Defense Buttstock/Pistol Grip, Glass Filled Polymer with Soft Touch Overmolding; RAIL PANELS: Daniel Defense Rail Panels made from Santoprene, heat resistant to 300Adeg F