This DB15 Pistol features a carbine-length, medium, 4150 ChromeMoly barrel, pistol-length gas system, and a shot-peened Mil-Spec 8620 bolt carrier. It has 7075-T6 aluminum receivers, 9" M-Lok handguard, Magpul MOE grip, and a SBA3 brace. Firearm Specifications Manufacturer: Diamondback Model: DB15 Caliber: 5.56mm NATO Barrel Length: 10 in Overall Length: 26 in Twist Rate: 1:8 RH Finish: Black Nitride Sights: None Grips/Stock: Black Magazine Capacity: 30