The PROOF Research PXT Carbon Fiber Barrel Blank (brand part no. 154229) is an 18-inch Sendero-contour barrel blank built around PROOF’s PXT rifling technology, giving custom rifle builders a lightweight, long-life foundation for precision rifle builds. PROOF Research engineers the PXT rifling geometry to reduce engraving force and throat erosion compared to conventional rifling, smoothing projectile engagement into the bore for less felt torque and better recoil control. In controlled testing, PXT barrels have shown a 30-100% increase in barrel life while holding PROOF’s usual accuracy standards. Built around PROOF’s proven carbon fiber construction, the blank delivers an exceptional stiffness-to-weight ratio and reduces overall rifle weight without sacrificing performance. Among rifle barrels, this PXT blank favors custom rifle builders and gunsmiths assembling lightweight hunting rifles or precision long-range systems.

Key Specifications

• The barrel measures 18 inches in a Sendero contour.
• The rate of twist is 1:10 using PROOF’s PXT rifling geometry.
• Built from PROOF’s proven carbon fiber construction.
• The barrel breech measures 2.5 inches with a 1.20-inch shank diameter.
• Weighs approximately 2 pounds, 8 ounces.
• PXT rifling has shown a 30-100% increase in barrel life in controlled testing.

Frequently Asked Questions

What is PXT rifling? PROOF’s Exponential Twist rifling, engineered to reduce engraving force and throat erosion compared to conventional rifling.

What is this barrel blank designed for? Custom rifle builders and gunsmiths building lightweight hunting rifles or precision long-range systems.

Buy the PROOF Research PXT Carbon Fiber Barrel Blank

Extended barrel life and a lightweight carbon fiber build are exactly what this PXT blank delivers. Order it from our Lubbock, Texas gun shop for fast shipping.