Diamondback Firearms DB15, Semi-automatic Rifle, AR15, 223 Remington/556NATO, 16 Barrel, A2 Flash Hider, 12 MLOK Handguard, Matte Finish, Black, Magpul MOE Pistol Grip, Magpul Carbine Stock, 30 Rounds, 2 Magazines, (1) 556 30 Round PMAG, (1) 300BLK 30 Round PMAG, Includes Additional Upper Receiver: 300 Blackout, 16 Barrel, A2 Flash Hider, 12 MLOK Handguard DB1721K001 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 rifles 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.