16" AR15 5.56 .223 Barrel AR15 .223 5.56 Barrel AR15-Barrel 5.56-.223-AR15

This AR-15 16" M4 contour black nitride 5.56 barrel has a carbine length gas system  with a 1:7 twist. Our 5.56 black nitride rifle barrels are made from the finest 4150 Chrome Moly Vanadium and precisely rifled for high accuracy at a great price.