What's in the Box DB-15 300 Blackout Semi-Auto Pistol (1) 30-Round Magazine Cable Lock Owner's Manual Diamondback Firearms offers high-quality firearms that are vetted by the everyday shooter, battle-tested operators, and entrusted police officers at a price point that meets the American blue-collar workers budget. Diamondback firearms start with the tried-and-true, U.S. Military-proven gas-impingement system and use only the highest quality components machined in Diamondback's CNC facility. Firearm Features SB Tactical SBA3 Brace Magpul MOE Grip A2 Flash Hider Pistol Length Gas System Firearm Specifications Manufacturer: Diamondback Firearms Model: DB-15 Caliber: 300 Blackout Finish: Black Hardcoat Anodized Barrel Length: 8" Twist Rate: 1:8" RH Barrel Profile: Heavy Barrel Material: 4150 CrMoV Steel Barrel Finish: Black Nitride Gas System: Pistol Length Upper Receiver: A3 Flattop Forged 7075 T6 Aluminum Lower Receiver: Forged 7075 T6 Aluminum (Diamondback Carbon Lower) Bolt Carrier Group: Shot-Peened, MPI Mil-Spec 8620 Carrier Handguard: 7" M-LOK Rail Grip: Magpul MOE Brace: SB Tactical SBA3 Magazine: Magpul Gen M3 PMAG, 30-Round Sights: None Muzzle Device: A2 Flash Hider (1/2"x28) Trigger: Standard Mil-Spec Weight: 5.4 lbs Overall Length: 24"