16" AR9 9mm Barrel AR9 9mm-Barrel AR9-Barrel (2)

This AR-15 16" M4 profile parkerized 9mm barrel has a blowback gas system with a 1:10 twist. Our AR-9 parkerized rifle barrels are made from the finest 4150 Chrome Moly Vanadium and precisely rifled for high accuracy at a great price.