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Diamondback DB1719B001 : Diamondback Firearms DB15 rifle made entirely in the USA. It uses a gas-impingement system and high quality CNC machined components. The DB15300 model 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, Magpul CTR buttstock and Mil-Spec buffer tube, Magpul MOE pistol grip, Diamondback 12" Keymod handguard, and a black hardcoat anodized finish.