AR-STONER AR-15 Build Kit with M4 Upper Receiver Assembly 223 Remington (Wylde) 16" Barrel, Complete Lower Receiver Parts Kit, Stock Assembly 6-Position Mil-Spec Collapsible

This AR-Stoner carbine length upper features a mil-spec bolt carrier group, phosphate finish, A2 fixed front sight, and an M4 profile barrel. The A3 upper will attach to virtually any standard AR-15 lower receiver and comes complete with charging handle, forward assist, ejection port cover, A2 flash hider, bolt and bolt carrier assembly. Supplied without a rear sight, this upper is a great platform for a red dot sight or iron sights (both sold separately). The AR-STONER Carbine Kit also includes