This A2 Gov’t. profile barreled Upper Assembly is complete, ready to snap onto your lower and take to the range. The highly accurate 20″ barrel is chrome lined and machined from 4150 Chrome Moly Vanadium 11595E steel rifled 1 x 7″ RHT. An A2 Flash Suppressor, and standard A2 Front Sight are fitted. The assembly includes premium quality, rifle length handguards molded from a fiberglass composite for heat resistance in sustained fire – they will not deform when subjected to high barrel heat. The machined aluminum flat top Upper Receiver is complete with Bolt, Bolt Carrier Assembly, Charging Handle, Forward Assist, Ejection Port Cover, and Removable A4 Carry Handle with 300 – 600 meter Dual Aperture Rear Sight adjustable for windage and elevation.