Proof Research Sig Cross Pre-Fit Carbon Fiber .308 Winchester Barrel, 18-inch, 1-10 Twist

This Proof Research barrel is a pre-fit, drop-in carbon-fiber-wrapped barrel from Proof Research (brand part no. 134474) machined for the Sig Sauer Cross bolt-action rifle. It is chambered in .308 Winchester, uses Proof Research’s carbon-fiber-wrapped stainless steel liner construction for reduced weight and better heat dissipation, and carries a 1-10 twist rate at an 18-inch overall length. This is a rifle barrel; it is listed in this store’s Shotgun Chokes category, which does not reflect the part itself.

Key Specifications

• It is a bolt-action rifle barrel, not an AR-pattern/semi-auto barrel.
• It is chambered in .308 Winchester, one of the most widely available precision/hunting cartridges.
• It is a pre-fit, drop-in barrel machined specifically for the Sig Sauer Cross bolt-action rifle.
• The Sig Sauer Cross is a modular, folding-stock bolt-action platform this barrel is matched to.
• It requires no gunsmith chambering, since it is finish-reamed at the factory to the Cross’s own headspace.
• It uses Proof Research’s carbon-fiber-wrapped stainless steel liner construction, lighter and cooler-running than a plain steel barrel.
• It has a 1-10 rate of twist.
• It measures a compact 18 inches overall.

Frequently Asked Questions

Will this fit any bolt-action rifle? No, this barrel is machined specifically as a drop-in, pre-fit part for the Sig Sauer Cross rifle; it will not fit a different action.

What does ‘drop-in’ mean here? It means the barrel is machined to the Sig Cross’s own barrel-nut takedown system, so it can be swapped without a gunsmith cutting a new chamber.

Why is this barrel only 18 inches? An 18-inch length keeps a .308 Winchester rifle compact and maneuverable, trading some muzzle velocity for handling versus a longer barrel.

Buy the Proof Research Sig Cross Pre-Fit Carbon Fiber .308 Winchester Barrel, 18-inch, 1-10 Twist

Browse the Proof Research Sig Cross Pre-Fit Carbon Fiber .308 Winchester Barrel, 18-inch, 1-10 Twist in our Shotgun Chokes lineup at Schaefer Defense; we ship it fast and fully insured from our Lubbock, TX gun shop.