What Materials Are Your Barrels Manufactured From? We offer barrels made from CrMoV steel (chrome moly vanadium) or 416R Stainless Steel. Both materials are selected for their durability, performance, and resistance to wear. Related to barrel Related articles What is QPQ? How Does Ballistic Advantage Ensure Proper Headspacing? What Gas Tube Do I Need for a Barrel? What is the Difference Between Pistol, Carbine, Mid, and Rifle Length Barrels? What to know about Gas Port Sizing