Proof Research PXT .22 LR 10/22 Barrel - Bull - Carbon Fiber - 18.5"

The Proof Research PXT 10/22 barrel is a carbon fiber wrapped .22 LR barrel that upgrades the Ruger 10/22 with Proof Exponential Twist rifling and a lighter bull-contour profile. Built for rimfire competition, plinking, and small-game builds, this pre-fit barrel delivers a threaded muzzle and improved heat management.

Features:

• Carbon fiber wrapped stainless steel barrel
• Proof Exponential Twist (PXT) rifling
• Bull contour
• 1/2x28 threaded muzzle
• Pre-fit for the Ruger 10/22
• Chambered in .22 LR
• Made in the USA

PXT rifling starts with a very gentle twist and increases gradually down the bore, which Proof says reduces engraving force and throat erosion while improving durability and accuracy. A tensioned carbon fiber sleeve wraps a stainless steel core, cutting weight by up to 64 percent compared with a steel barrel of similar contour.

The 18.5-inch length adds sight radius and a little velocity, and the barrel weighs about 1 pound 12 ounces. The carbon fiber wrap improves heat dissipation, which helps hold point of impact during high-volume shooting and reduces harmonic vibration. The 1/2x28 muzzle threads accept compensators, flash hiders, and suppressors, and the pre-fit design swaps onto a 10/22 receiver without gunsmithing. It is a practical way to build a lighter, more consistent rimfire rifle for matches, trail use, or relaxed range sessions.

Proof Research, based in Columbia Falls, Montana, pioneered carbon fiber wrapped rifle barrels and manufactures its barrels in the USA.