The Proof Research Carbon Fiber Sendero Barrel Blank (brand part number 101001) is a 24-inch .308 Winchester barrel blank finished in black, wrapped in aerospace-grade carbon fiber over a 416R stainless steel core. Machined by Proof Research with a 1:10 twist rate in the standard Sendero contour, this blank runs up to 64% lighter than a traditional steel barrel while improving heat dissipation and resisting point-of-impact shift during high-volume fire. As a blank, it is sold unchambered for a gunsmith to fit and finish to a specific action.

Key Specifications

• Chambered for .308 Winchester cartridges at the customer’s chosen specification.
• Barrel length is 24 inches.
• Twist rate is 1:10, matched to standard .308 bullet weights.
• Constructed from 416R stainless steel wrapped in carbon fiber.
• Finished in black.
• Contour is Sendero, up to 64% lighter than a comparable steel barrel.
• Sold as a barrel blank for gunsmith chambering and fitting.
• Improves heat dissipation for cooler, longer-lasting strings of fire.
• Resists point-of-impact shift during high-volume strings of fire.

Frequently Asked Questions

Is this barrel ready to install out of the box? No, this is an unchambered blank; a gunsmith must chamber, thread, and fit it to your specific action.

Does the carbon fiber wrap reduce accuracy? No, Proof Research engineers the wrap to maintain match-grade accuracy while cutting weight and improving heat dissipation versus a solid steel barrel.

Buy the Proof Research .308 Winchester Sendero Blank

Give your gunsmith a premium lightweight blank for your next custom build. Order this rifle barrel from our Lubbock, Texas gun shop, and we will get it to your door as soon as it’s ready to ship.