Criterion Barrels 20in AR-15 HBAR Nitrided Rifle Gas System Barrel Black

Criterion Barrels 20in AR-15 HBAR Nitrided Rifle Gas System Barrel Black. Criterion Barrels crafted these Rifle Barrels with a .223 Wylde chamber that is compatible with both .223 Remington and 5.56 NATO ammunition and the barrel has honed and hand-lapped rifling for bore uniformity and easier cleaning which also helps with accuracy and precision. This Criterion Barrels AR-15 HBAR Nitrided Rifle Gas System Barrel is equipped with a 0.750in gas block that is compatible with both standard and M4 f