AR-STONER AR-15 Upper Receiver Assembly 223 Remington (Wylde) 20" Barrel 15" M-LOK Ultralight Handguard

This AR-STONER AR-15 Upper Receiver Assembly has a 20" government barrel and a black nitride finish, and features a 1:8 twist rate, with a rifle length gas system. It includes the ultralight 15" MLOK rail, an M4 flat-top forged upper receiver, a bolt carrier group, a flash hider, and a rear charging handle. This .223 Wylde upper is compatible with any mil-spec AR-15 lower.