The Proof Research Carbon Fiber Sendero Barrel Blank (brand part number 101018) is a 26-inch .308 Winchester barrel blank finished in black, wrapped in aerospace-grade carbon fiber over a 416R stainless steel core. Machined by Proof Research in the standard Sendero contour, this extended-length blank runs up to 64% lighter than a traditional steel barrel while offering improved heat dissipation and reduced harmonic vibration for consistent accuracy across long strings of 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 26 inches, the extended option in this Sendero lineup.
• Constructed from 416R stainless steel wrapped in carbon fiber.
• Finished in black.
• Contour is Sendero, up to 64% lighter than a comparable steel barrel.
• Reduces harmonic vibration for consistent accuracy under repeated fire.
• Sold as a barrel blank for gunsmith chambering and fitting.

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.

Why choose the 26-inch length? The extended length helps .308 Winchester loads reach additional velocity for long-range shooting.

Buy the Proof Research .308 Winchester 26-inch Sendero Blank

Give your gunsmith a premium lightweight blank for a long-range custom build. Order this rifle barrel from our Lubbock, Texas gun shop for fast, insured shipping to your door.