Complete AR-15 14.5″ M4 Upper w/ 12″ Quad Rail Hand Guard (No BCG) This upper includes a 14.5″ M4 profile barrel with an A2 flash hider. A3 upper receiver comes with forward assist and ejection port cover installed. (Bolt carrier group NOT included.) The 1:9 twist barrel and receiver have matching M4 feed ramps. Charging handle is included. A comfortable 12″ free float quad rail hand guard. The gas system is carbine with 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 upper assembly, add your bolt carrier group, lock it on the lower 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.****