*CONTACT US FOR A SPECIAL COUPON CODE!*
Proof Research AR-10 Carbon Fiber Barrel – .308 Win – 18" Rifle Gas
The Proof Research AR-Style Carbon Fiber Barrel (100028) represents the pinnacle of barrel technology for the large-frame AR platform. Engineered for the serious marksman, this 18-inch barrel provides the stiffness and accuracy of a heavy-profile match barrel at a fraction of the weight. By wrapping a precision-machined 416R stainless steel core in a proprietary aerospace-grade carbon fiber matrix, Proof Research has created a barrel that is up to 64% lighter than traditional steel barrels while offering superior heat dissipation and reduced harmonic vibration.
This .308 Winchester barrel features a Rifle-Length gas system, which significantly smooths out the recoil impulse and reduces wear on your bolt carrier group compared to shorter systems. The 1:10 twist rate is optimized for stabilizing a wide range of projectile weights, from standard 147gr FMJ to 175gr match-grade long-range loads. Each barrel is "Match Grade" certified, meaning it is held to extreme straightness and concentricity tolerances. Whether you are building a lightweight "Large Frame" hunting rifle or a high-performance PRS Gas Gun, the Proof Research carbon fiber barrel ensures that your first shot—and your last—impact exactly where you intend.
Note: This barrel features a standard DPMS-pattern extension and is compatible with most LR-308 / SR-25 patterned upper receivers. Professional installation is recommended.
Key Features
- Carbon Fiber Wrapped: Proprietary technology reduces weight while increasing stiffness and cooling rates.
- Rifle-Length Gas System: Delivers a smoother cycling action and improved reliability for suppressed or unsuppressed fire.
- 416R Stainless Steel Core: Match-grade steel core ensures extreme longevity and sub-MOA accuracy potential.
- Optimized Twist: 1:10 twist rate provides excellent stability for popular .30-caliber heavy-grain bullets.
- Heat Dissipation: Carbon fiber moves heat away from the bore faster than steel, preventing point-of-impact shift during rapid fire.
- Made in the USA: Proudly manufactured in Montana to the most exacting standards in the industry.
Product Specifications
- Brand: Proof Research
- Caliber: .308 Winchester
- Length: 18 Inches
- Material: Carbon Fiber Wrapped 416R Stainless Steel
- Gas System: Rifle Length
- Twist Rate: 1:10
- Gas Block Journal: .750"
- Muzzle Thread: 5/8x24 TPI
- Extension: DPMS Style (.308)
- Weight: 2 lbs 4 oz
- MPN: 100028
- UPC: 843068100028
