PROOF Research 138946 .260 Remington 18-Inch Carbon Fiber Pre-Fit Barrel for SIG Cross

Proof Research 138946 Bolt Action Barrel Pre-Fit 260 Rem 18" 1:8" Twist (5 Groove), 5/8"-24 tpi Threaded, Carbon Fiber, Drop-In Design for Sig Cross

Upgrade your SIG Cross rifle with the PROOF Research 138946 carbon fiber pre-fit barrel chambered in .260 Remington. Designed as a drop-in replacement, this barrel allows qualified shooters to change barrels at home without sending the rifle to a gunsmith. Its pre-fit design is engineered for reliable headspace when installed according to the manufacturer’s instructions, making it a practical option for rifle owners seeking a streamlined barrel replacement process.
The barrel features an 18-inch profile and a 1:8 twist rate suited to stabilizing a broad range of .260 Remington projectiles. A five-groove bore supports consistent bullet engagement and is designed to promote dependable accuracy and repeatable performance. The carbon fiber finish helps provide a distinctive appearance while supporting the lightweight handling characteristics valued in modern precision and hunting rifles.
As part of PROOF Research’s E X Tra Barrels line, this model combines a precision-oriented construction with the convenience of a drop-in format. It is intended for use with compatible SIG Cross bolt-action rifle configurations and should be installed only after confirming chambering, rifle compatibility, and all manufacturer requirements. Always follow safe firearm-handling procedures, verify the chamber is clear before installation, and have the completed setup inspected by a qualified gunsmith if you are uncertain about fit, headspace, or function.

Features:

• Brand: PROOF Research

• Part Number: 138946

• Compatibility: Designed for compatible SIG Cross bolt-action rifles

• Caliber: .260 Remington

• Barrel Length: 18 inches

• Twist Rate: 1:8

• Bore Type: Five-groove

• Construction: Carbon fiber

• Barrel Type: Pre-fit

• Installation: Drop-in design

• Product Line: E X Tra Barrels