Complete AR-15 16″ 7.62×39 Upper w/ 15″ Flat Dark Earth (FDE) Slim Air Lite M-Lok Hand Guard This upper includes a 16″ heavy barrel tipped with an A2 flash hider threaded 5/8″-24. The A3 upper receiver comes with forward assist and ejection port cover installed. Barrel and receiver have matching M4 feed ramps. Heavy duty M16 bolt carrier group and mil-spec charging handle included. Comfortable 15″ flat dark earth Air Lite free floating M-Lok hand guard. The gas system is carbine length and comes with a .750″ low profile micro gas block. This high quality upper is a perfect fit on any 5.56 or multi-cal AR-15 lower. Swap the complete upper and you’re ready to shoot! Don’t forget to search our site for a couple 7.62×39 magazines! Comes with the Barrier Defense lifetime warranty! ****Know your states laws when purchasing gun parts.****