This M4 Barreled Upper Assembly is complete and ready to snap onto your Lower - just add the Rear Sight or Optic of your choice to the machined Picatinny Rail of the Receiver. The highly accurate 14.7” M4 Profile Barrel is Chrome Lined and machined from 4150 Chrome Moly Vanadium 11595E Steel. Rifling is 1 x 7” Right Hand twist to stabilize the heavier 75 and 77 grain bullets, and the barrel extension has the M4 style feed ramps. A pinned and welded A2 Flash Suppressor and F-Marked A2 Front Sight are fitted.
THIS UPPER IS LEGAL TO USE ON ANY RIFLE LOWER!!!!!