Diamondback Firearms DB15 rifle made entirely in the USA. It uses a gas-impingement system and high quality CNC-machined components. The DB15C model features a free-float barrel, forged 7075 T6 aluminum lower and optic-ready upper receiver, and a carbine length gas system. This model has a 16" stainless steel barrel with an A2 flash hider and 4140 chrome moly lined, Rogers AR Super-Stoc, A2 pistol grip, 11" M-LOK handguard, and a black hardcoat anodized finish.