Impact Precision PXT Pre-Fit Barrels

PROOF Research pre-fit carbon fiber & steel barrels for the Impact Precision 737R, 787R, and NBK/777R are to be installed in a simple operation requiring few specialized tools. These barrels come chambered and threaded for an easy install.

PXT - PROOF Exponential Twist - is a complete rethinking of conventional rifling geometry and twist progression, engineered to reduce engraving force, minimize throat erosion, and create a smoother transition as the projectile engages the rifling.

By dramatically reducing rifling lead angle and smoothing projectile engagement into the bore, PXT technology helps reduce wear, improve consistency, and create less felt torque during firing for improved shooting control and the ability to stay on target more effectively.

DISCLAIMER:
* All shouldered pre-fit barrels are guaranteed for headspacing.
* Due to variance in actions we do not guarantee the timing and alignment of the barrel engraving to your stock line.
* Barrels are specific to the action type/length and are not interchangeable.

Chamber Specs and Dimensions