Diamondback Firearms' DB15 rifle is made entirely in the USA. It uses a gas-impingement system and high quality CNC machined components. The DB15US Rifle features a melonite coated, 4140 chrome-moly, free-float barrel forged 7075 T6 aluminum lower along with an A3 flattop upper receiver, no sights, and a carbine length gas system. This model has an A2 flash hider, 6-position ATI Mil-Spec buttstock and buffer tube, A2 pistol grip, and a standard two-piece handguard with an black hardcoat anodized finish.