The Proof Research Bolt-Action Barrel (brand part number 138960) is a 20-inch .260 Remington barrel built as a guaranteed-headspace, drop-in fit for the Sig Sauer Cross rifle. Machined by Proof Research from stainless steel with a 5-groove bore and a 1:8 twist rate, this barrel is threaded 5/8-24 tpi and ends the days of sending a Cross out to a gunsmith for a barrel change. Because it is stand-alone and guaranteed to headspace correctly, the swap is achievable at home with no gunsmith required.

Key Specifications

• Chambered in .260 Remington for efficient, low-recoil long-range performance.
• Barrel length is 20 inches.
• Twist rate is 1:8, matched to common .260 Remington bullet weights.
• Rifled with a 5-groove bore.
• Constructed from stainless steel for corrosion resistance.
• Threaded 5/8-24 tpi for standard muzzle devices.
• Designed as a drop-in fit for the Sig Sauer Cross.
• Guaranteed for correct headspacing at home, no gunsmith required.
• Eliminates the need to ship your Sig Cross out to a gunsmith for a caliber change.

Frequently Asked Questions

Do I need a gunsmith to install this barrel? No, Proof Research designs this as a stand-alone, guaranteed-headspace drop-in barrel for the Sig Cross.

Will this fit any other bolt-action rifle? No, this barrel is built specifically for the Sig Sauer Cross platform.

Buy the Proof Research .260 Remington Sig Cross Barrel

Change calibers on your Sig Cross at home with a guaranteed-headspace drop-in barrel. Order this rifle barrel from our Lubbock, Texas gun shop for fast, insured shipping to your door.