The Proof Research PR15 Carbon Fiber AR-Style Barrel in 6mm ARC is built for shooters who demand the best in precision, durability, and weight savings. This 20-inch barrel features a Rifle +1 length gas system and a 1:7.5" twist rate with 4-groove rifling, optimized to stabilize a wide range of 6mm ARC projectiles for exceptional long-range accuracy. The barrel is wrapped with high-strength, aerospace-grade carbon fiber impregnated with a proprietary matrix resin, reducing weight by up to 64% compared to traditional steel barrels of similar contour. The carbon fiber construction also delivers superior heat dissipation, keeping the barrel cooler and extending its lifespan during sustained fire. A 5/8-24 TPI muzzle thread accommodates a broad selection of suppressors and muzzle devices, while the .750-inch gas block journal ensures compatibility with standard AR-platform components. Whether you are competing on the range, hunting in the backcountry, or building a precision rifle, the PR15 Carbon Fiber Barrel sets the standard for modern AR-platform barrel technology.
Product Highlights
- Up to 64% Lighter: Carbon fiber wrap dramatically reduces weight compared to traditional steel barrels of similar contour, improving maneuverability and reducing shooter fatigue.
- Superior Heat Dissipation: Aerospace-grade carbon fiber construction provides improved heat dissipation for cooler, longer-lasting performance during sustained or high-volume fire.
- Aerospace-Grade Carbon Fiber Wrap: Wrapped with high-strength carbon fiber impregnated with a proprietary matrix resin for unprecedented durability, rigidity, and corrosion resistance.
- 6mm ARC Precision Chambering: 1:7.5" twist rate with 4-groove rifling is optimized for 6mm ARC cartridges, delivering outstanding accuracy at long range.
- 5/8-24 TPI Muzzle Threading: Ready to accept a wide variety of suppressors and muzzle devices for versatile and user-configurable rifle builds.
Specs
- Brand: Proof Research
- Model: PR15 Carbon Fiber AR Barrel
- Series: PR15
- MPN: 130438
- UPC: 843068130438
- Caliber: 6mm ARC
- Barrel Length: 20"
- Gas System: Rifle +1 Length
- Twist Rate: 1:7.5"
- Grooves: 4
- Muzzle Thread: 5/8-24 TPI
- Gas Block Journal Diameter: .750 in
- Material: Carbon Fiber / Stainless Steel
- Finish: Stainless
- Weight: 2 lbs. 1 oz.
- Platform Compatibility: AR-15 / PR15 Series
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