Features: LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum BARREL: Chrome Moly Vanadium Steel Cold Hammer Forged 1:7" Twist 14.5? Lightweight 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 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 MFR 13.5" CNC Machined of 6061-T6 Aluminum M-LOK Attachment Type III Hard Coat Anodized CHARGING HANDLE: GRIP-N-RIP Charging Handle Body CNC Machined of 7076-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 Muzzle Thread: 5?824 TPI (Threads Per Inch) Barrel Length: 14.5" Barrel Profile: Lightweight Product Weight: 5.9a Length: 44" Max Magazine: Magpul PMAG 5 7.62 AC Case: Daniel Defense Full-Latch Impact Plastic Case Manufacturer: Daniel Defense