The ambidextrous DD4 RIII AR15 style rifle is designed to satisfy the needs of both right- and left-handed shooters in popular shooting sports and for tactical and defensive applications. Its fully ambidextrous lower allows a shooter to operate the bolt catch safety selector and magazine release without having to move or remove their dominant hand from the rifle’s grip while its GRIP-N-RIP Charging Handle is fully ambidextrous as well. A 12.5 inch lightweight RIS III rail modeled after the revolutionary RIS II two-piece handguard developed for SOCOM features M-LOK attachment for lighter weight while still offering M203 grenade-launcher attachment. It surrounds a 16 inch Cold Hammer Forged Government Profile barrel and our mid-length gas system known to have a smoother recoil impulse adds to this rifle’s accuracy by allowing for quick but precise rapid fire. This rifle also comes with the ergonomic Daniel Defense Buttstock and Pistol Grip. – MATERIALS & CONSTRUCTION – LOWER RECEIVER: Fully ambidextrous 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: RIS III 12.5 CNC Machined of 6061-T6 Aluminum M-LOK Attachment Flat Dark Earth 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 × 28 TPI (Threads Per Inch) – Gas System: Mid-length – Barrel Length: 16 – Barrel Profile: Government – Product Weight: 6.52 lbs – Length: 32 1/4-35 7/8 – Magazine: DD Magazine – Case: Daniel Defense Full-Latch Impact Plastic Case