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 10.5 barrel A2 flash hider buffer tube A2 pistol grip and an aluminum modified 4-rail handguard with a tactical gray finish.