Diamondback Firearms' DB15 rifle is made entirely in the USA. It uses a gas-impingement system and high quality CNC machined components. The DB15300 Elite Rifle features a melonite coated, 4140 chrome-moly, free-float barrel. It also has a forged 7075 T6 aluminum lower along with an A3 flattop upper receiver, no sights, and a pistol length gas system. This model has an A2 flash hider, ATI Strikeforce stock with aluminum commercial buffer tube assembly, A2 style pistol grip, and a Diamondback aluminum modified four rail handguard with a black hardcoat anodized finish.