The Daniel Defense DDM4V9 is a semi-automatic rifle with 15 quad rail. The DDM4V9 features mil-spec machined 7075-T6 aluminum upper and lower receivers cold hammer forged chrome moly vanadium steel government profile 16 barrel with chrome lining standard flash suppressor mid-length gas system with pinned low-profile gas block M16 profile bolt carrier group and 7075-T6 machined aluminum handguard. This rifle has a polymer buttstock pistol grip and vertical grip as well as a six-position receiver extension. DETAILS Daniel Defense 15175047 DDM4 V9 Semi-Automatic 223 Remington5.56 NATO 16 301 6-Position Black Stk Black Hardcoat AnodizedBlack Phosphate