Christensen Arms Barrels use a proprietary layered design that offers remarkable weight reduction, superior accuracy, and performance. The barrel lining is made from match-grade 416R stainless steel and is measured to a tolerance of +/- .0001. The Remington 700 carbon fiber barrels feature Christensen Arms' proprietary layering system and offer superior strength and accuracy while weighing less than a steel barrel of the same contour. Features416R Stainless steel coreButton rifledIncludes muzzle end thread protectorChamber finishing should only be done by a qualified gunsmith