Diamondback Firearms' DB15 Pistol is made entirely in the USA. It uses a gas-impingement system and high quality CNC machined components. The DB15 AR Pistol features a melonite coated, 4140 chrome-moly 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 7.5" barrel, buffer tube, A2 pistol grip, and an aluminum modified 4-rail handguard with a black hardcoat anodized finish.