Proof Research .308 Win Tikka T3X Carbon Fiber Pre-Fit Barrel, Sendero, 16.5-inch

The Proof Research .308 Winchester Tikka T3X Carbon Fiber Pre-Fit Barrel in Sendero contour, 16.5 inches (brand part no. 138687), is a ready-to-install replacement barrel machined specifically to drop into a Tikka T3X action without the gunsmithing a standard blank requires. Proof Research builds this blank from a match-grade 416R stainless steel core turned down to reduce weight, then wraps it in proprietary aerospace-grade carbon fiber, cutting significant weight versus a comparable all-steel barrel without sacrificing rigidity or accuracy potential. Because it’s a pre-fit rather than a blank, the chamber, headspace, and barrel tenon are already cut to match the Tikka T3X action, so it installs as a genuine drop-in upgrade.

Key Specifications

• Chambered in .308 Winchester, one of the most versatile precision rifle cartridges.
• Cut to a 16.5 inch length in Proof Research’s Sendero contour.
• Rifled with a 1:10 twist rate, matched to common .308 Win bullet weights.
• Threaded 5/8-24 at the muzzle, ready for a brake or suppressor.
• Built around a 416R stainless steel core wrapped in aerospace-grade carbon fiber.
• Machined as a pre-fit barrel specifically for the Tikka T3X action, with chamber and tenon already cut.

Frequently Asked Questions

Does this barrel require gunsmithing to install? No, it’s a pre-fit barrel machined to drop directly into a Tikka T3X action.

Is this barrel threaded? Yes, it’s threaded 5/8-24 and ready for a brake or suppressor.

Buy the Proof Research .308 Win Tikka T3X Pre-Fit Barrel

Tikka T3X owners who want a genuine drop-in carbon fiber upgrade without a trip to the gunsmith will get exactly that with this pre-fit .308 Win barrel. Order it through our Lubbock, Texas gun shop and browse more rifle barrels from Proof Research and other trusted brands.