This straight fluted .92" Volquartsen Stainless drop-in bull barrel with a 32 comp hole features match bored and chamber dimensions with no more than .0001 variations from breech to muzzle. Each barrel is digitally measured and inspected. The Stainless is drilled and tapped to accept Volquartsen barrel mounted scope mounts. The straight fluting is a traditional pattern that decreases weight, increases surface area, doesn't affect accuracy, and is specially machined to avoid additional stress on the bore.