Radical Firearms AR15 SOCOM rifle chambered in 5.56 NATO with M4 feed ramps. Barrel measures 16 inches and is made from 4140 chrome molybdenum vanadium steel. It has a black Melonite exterior and 1:7 twist. The lightweight, low profile, 15-inch RPR-free-float handguard features a Picatinny rail at 12 o'clock, as well as M-LOK slots that allow for additional lights, lasers and other accessories. Mil-spec Type III anodized upper receiver and lower receivers are made from 7075-T6 aluminium. A CAR adjustable stock is included with the carbine-length mil-spec receiver extension tube/buffer tube. This provides a comfortable shooting platform for any position. Radical Firearms AR15 rifle makes a great first AR, and is a great addition for your collection. Optic not included.