Complete AR-15 16″ 5.56/.233 Upper with 15″ Flat Dark Earth Slim, Lightweight M-Lok Hand Guard Upper includes a 16″ barrel with a carbine gas system. A3 upper receiver with forward assist and ejection port cover installed. Barrel and receiver have matching M4 feed ramps. Heavy duty M16 bolt carrier group and charging handle included. Flat dark earth 15″ free float M-Lok hand guard. Low-profile .750 micro gas block and A2 flash hider/suppressor. This high quality upper is a perfect fit on any 5.56 or multi-cal mil-spec AR-15 lower. Swap the complete upper and you’re ready to shoot.  This high quality item comes with the Barrier Defense lifetime warranty! ****Know your states laws when purchasing gun parts.****