Features: 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: Chrome Moly Vanadium Steel Cold Hammer Forged 1:7 Twist 16" Government Profile Mid-length Gas System 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: 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 BUFFER: H Buffer SIGHTS: Sold Separately HANDGUARD: Daniel Defense MFR 15.0 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 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: 16" Barrel Profile: Government Product Weight: 6.2 LBS Length: 32 1/4" - 35 7/8" Magazine: DD Magazine Case: Daniel Defense Full-Latch Impact Plastic Case