AR-STONER A3 AR-15 Complete Upper Receiver 450 Bushmaster 16" Barrel

This AR-STONER Rifle length upper features a 450 Bushmaster bolt carrier group, parkerized finish, low profile gas block, 16" barrel, 15" Ultralight M-LOK handguard and a heavy 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, 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).Features:450 Bushmaster Bolt Carrier Group15" Ultralight M-LOK Handguard16" 1:24" Twist Barrel