The Proof Research carbon fiber-wrapped AR-style barrel provides a lightweight alternative to traditional steel barrels while maintaining a rifled bore and AR-15 compatibility. Proof Research reports up to 64% weight reduction compared with similar steel contours and improved heat dissipation for extended use. The barrel is wrapped with aerospace-grade carbon fiber impregnated with a proprietary matrix resin and features a pistol-length gas system and 5/8-24 muzzle threads. It is intended for AR-style pistols or short-barrel AR builds where compact length and reduced mass are priorities.
Key Specifications
- Caliber: .300 AAC Blackout.
- Barrel length: 12.50 inches.
- Twist rate: 1:7.
- Muzzle threads: 5/8-24.
- Gas system length: Pistol.
- Barrel type: Pistol Length.
- Finish: Carbon Fiber.
- Barrel features: Carbon Fiber Wrapped.
- Contour: Medium.
- Platform: AR-15 (AR Style).
The Proof Research 12.5 in carbon fiber-wrapped barrel combines reduced mass and improved thermal characteristics in a compact AR profile. Its pistol-length gas system and conventional 5/8-24 muzzle threading make it a practical choice for compact AR builds where durable construction and efficient heat management are valued.
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