18" AR15 .450 Bushmaster Barrel AR15 Barrel AR15-Barrel .450-Bushmaster

This AR-15 18" heavy barrel, parkerized .450 Bushmaster barrel has a mid-length gas system with a 1:24 twist rate. Our .450 Bushmaster parkerized rifle barrels are made from the finest 4150 Chrome Moly Vanadium and precisely rifled for high accuracy at a great price.