Proof Research 107720 308 Win 16.5" 1:8 Twist Carbon Fiber Sendero Bolt Action Barrel Blank

The Proof Research 107720 is a bolt-action carbon fiber barrel blank built on a steel core wrapped in carbon fiber for use in custom rifle builds.

Chambered for the popular 308 Winchester cartridge, this blank measures 16.5 inches long with a 1:8 twist rate.

It is profiled in Proof Research's heavy Sendero contour, with a 2.5" breech length, a 1.20" shank diameter, and a total weight of 2 lbs 6 oz.

Sold as a true barrel blank, this part has not been chambered, threaded, or crowned, allowing the gunsmith or custom builder to fit the barrel to their specific action and final configuration.