Calibers: 7.62x51mm/.308 Win. Capacity: 20-round Magpul PMAG. Barrel: 16 in., 5/8x24 tpi muzzle thread, S2W barrel profile, 1:11 twist. Stock: Daniel Defense Buttstock. Sights: Full-length top rail. Trigger: Daniel Defense Mil-Spec. Handguard: Daniel Defense DD5 Rail 15.0, 6061-T6 aluminum, M-LOK. Weight: 8.3 lbs. Overall Length: 33.375 to 37 in. Features: Intermediate gas system, two-position adjustable gas block, DLC-coated bolt carrier group, cold hammer chrome-lined forged barrel, Mil-Spec heavy phosphate coated. 4-Bolt Connection System, ambidextrous controls (bolt catch, magazine release, safety selector, furniture, GRIP-N-RIP charging handle). Lower Receiver: Enhanced flared magazine well and rear receiver QD swivel attachment point. CNC machined of 7075-T6 aluminum, Type III hard-coat anodized. Upper Receiver: CNC machined of 7075-T6 aluminum, Type III hard-coat anodized. Daniel Defense Superior Suppression Device, 6-position Mil-Spec 7075-T6 aluminum receiver extension. Daniel Defense Pistol Grip, accepts all SR-25 magazines.