Proof Research 130438 6mm ARC 20" AR Barrel

Proof Research 130438 Carbon Fiber AR Barrel

The Proof Research 130438 represents a significant advancement in barrel technology, combining traditional accuracy with modern materials science. This 6mm ARC barrel delivers the performance serious shooters demand while reducing weight and improving thermal management.

Key Features

• Caliber & Length: 6mm ARC in a 20" configuration, ideal for precision rifle applications
• Twist Rate: 1:7.5" twist for optimal bullet stabilization across the 6mm ARC cartridge range
• Threading: 5/8-24 tpi for standard muzzle device compatibility
• Grooves: 4-groove design for reliable bullet engagement

Carbon Fiber Construction

The barrel is wrapped in aerospace-grade carbon fiber impregnated with a proprietary matrix resin. This advanced construction delivers:

• Weight Reduction: Up to 64% lighter than traditional steel barrels of comparable contour
• Heat Dissipation: Dramatically improved cooling characteristics extend barrel life and maintain accuracy during extended shooting sessions
• Durability: High-strength materials withstand the demands of precision shooting and field use

Performance Benefits

The combination of reduced weight and superior heat management makes this barrel an excellent choice for shooters who demand both accuracy and reliability. Whether you're building a precision rifle or upgrading an existing platform, this barrel delivers measurable advantages in handling and sustained performance.