Proof Research Carbon Fiber AR 15 Barrel Kits

These are a special run that Proof offered that come complete with muzzle brake, adjustable gas block and gas tube.


 THE ONLY CARBON FIBER-WRAPPED BARREL APPROVED FOR USE BY THE U.S. MILITARY.


This patented manufacturing process begins with full-profile, match-grade 416R stainless steel barrel blanks that are made in our firearms division. These blanks are then turned down to a significantly reduced profile greatly reducing weight. This reduced contour barrel is then filament-wrapped with high-strength, aerospace-grade carbon fibers impregnated with a high-thermal conductivity matrix resin developed by our aerospace materials division.

SKU: PR-CF-AR15-KIT
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Sale: $999.99

Special $677.77

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224 Valkyrie 7 Twist -18" .815 Rifle
.223 Wylde 8 Twist-18" .815 Rifle
Product Name In Stock
Proof Research

Description

Details

These are a special run that Proof offered that come complete with muzzle brake, adjustable gas block and gas tube. You must use everything included in the kit since they use proprietary parts. 

 

THE ONLY CARBON FIBER-WRAPPED BARREL APPROVED FOR USE BY THE U.S. MILITARY.

This patented manufacturing process begins with full-profile, match-grade 416R stainless steel barrel blanks that are made in our firearms division. These blanks are then turned down to a significantly reduced profile greatly reducing weight. This reduced contour barrel is then filament-wrapped with high-strength, aerospace-grade carbon fibers impregnated with a high-thermal conductivity matrix resin developed by our aerospace materials division.

Carbon Wrapping Of Proof Research Barrels

The aerospace-grade carbon fiber used is 10 times stronger than stainless steel and has a specific stiffness nearly 6 times greater than steel. But strength and stiffness are only part of the equation. Heat conductivity and thermal expansion are also of paramount importance when developing a match-grade, carbon fiber barrel. Our helical wrapping pattern favors the longitudinal thermal diffusivity of the carbon fibers (along the length of the barrel) allowing them to dissipate the heat emanating from the steel liner rather than insulate it. This is achieved through phonon transport in the direction of the continuous fibers and greatly reduces the mirage effect intrinsic in heavy steel barrels.

However, because our unique bonding agent contains a high-thermal pitch fiber—similar to those proven in Formula One and aerospace applications—our barrels also conduct heat very effectively through the wall (thickness) of the barrel, greatly increasing thermal conductivity and resulting in barrels that stay cooler and maintain accuracy over longer sessions of fire.

After wrapping, barrels are cured and consolidated then ground to their final contour. The end result is an aerospace-grade, high-fiber volume fraction composite barrel with less than 1% porosity suitable for the most extreme environments and capable of shot-after-shot accuracy that will impress the most veteran hunter or precision marksmen.

Proof Research Heat Dissipation

PROOF Research’s match-grade carbon fiber barrels are stronger, lighter, as accurate as the finest precision steel barrels and will maintain their performance in the harshest conditions. PROOF didn’t invent carbon fiber-wrapped barrels. They just perfected them.

  • Up to 64% lighter than traditional steel barrels
  • Match-grade accuracy
  • Improved heat dissipation for cooler and longer lasting barrels
  • No point-of-impact shift during high-volume fire
  • Reduced harmonic barrel vibration
  • Unprecedented durability

ALL SALES FINAL. NO RETURNS FOR ANY REASON

Additional Info

Additional Info

Brand Proof Research

Reviews

Great BBL. Review by Mnorrac
Rating
This is a great BBL at a great price. The purchaser should beware this is a proprietary BBL setup. I knew this in advance. What I didn't know was that a standard rifle length hand-guard will not work with this setup. I prefer to use Aero Precision M-LOK Hand-guards. A rifle length will make contact with the gas block and cause mis-alignment. I researched what others did and followed suit. An M-LOK in size 10.7 will work fine. It leaves approx. 1.3 inches between the rear of the gas-block and the front of the hand-guard which is acceptable to me considering the BBL is lightweight and very accurate in 224 Valkyrie.

If you want that seamless top rail that runs from front of gas block rearward to the back of the upper, this is not the BBL for you. Proof made these barrels specifically for a Savage MSR and the hand-guard on that rifle is proprietary also.

Bottom line: I love the way it shoots and the appearance is not awful. For what you're getting, I believe it's worth the appearance. This is the only reason for the 4 star rating. (Posted on 5/5/2022)

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