Features: LOWER RECEIVER: Proprietary with Enhanced Flared Magazine Well Fully Ambidextrous Controls 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: Chrome Moly Vanadium Steel Cold Hammer Forged 1:7 Twist 14.5" Government 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 with Mil-Spec Heavy Phosphate Coating Mid-length Direct Impingement MUZZLE DEVICE: Pinned and Welded Daniel Defense Flash Suppressor Extended 17-4 PH Stainless Steel Salt Bath Nitride Finished BOLT CARRIER GROUP: M16 Profile Mil-Spec MP Tested Chrome Lined Properly Staked Gas Key BUFFER: H Buffer SIGHTS: Sold Separately HANDGUARD: Daniel Defense RIS III 12.5 Patented 6-Bolt Bolt-Up System Flat Dark Earth CNC Machined of 6061-T6 Aluminum CHARGING HANDLE: GRIP-N-RIP Charging Handle Body CNC Machined of 7075-T6 Aluminum Handles & Latch CNC Machined of 6061-T6 Aluminum Heavy Duty Stainless Steel Roll Pins Type III Hard Coat Anodized RECEIVER EXTENSION: 6 Position Mil-Spec 7075-T6 Aluminum BUTTSTOCK: Daniel Defense Buttstock Glass Filled Polymer with Soft Touch Overmolding PISTOL GRIP: Daniel Defense Pistol Grip Glass Filled Polymer with Soft Touch Overmolding Made in the USA! Specifications: Mounting System M-LOK Caliber 5.56mm NATO Muzzle Thread 1 ? 2 A- 28 TPI (Threads Per Inch) Gas System Mid-length Barrel Length 14.5" Barrel Profile M4 Product Weight 6.39 lbs Length 31 1/2" - 34 A 3/4" Magazine DD Magazine Case Daniel Defense Full-Latch Impact Plastic Case