6mm ARC Prefit Carbon Fiber Barrel

6mm ARC Prefit Carbon Fiber Barrel

The 6mm ARC is a compact, efficient 6mm cartridge designed to deliver excellent ballistic performance with low recoil. Based on the 6.5 Grendel case family, the 6mm ARC combines high-BC 6mm bullets, efficient powder capacity, and a compact overall cartridge length.

This Helix 6 Precision 6mm ARC Prefit Carbon Fiber Barrel features a match-grade 416R stainless steel core wrapped in our proprietary carbon fiber construction. The result is a lightweight, stiff barrel designed to maintain accuracy and minimize point-of-impact shift as temperatures rise and shooting strings extend.

The 6mm ARC is an excellent choice for shooters looking for a combination of low recoil, efficient ballistics, and high-BC 6mm bullets. Its performance makes it well suited for hunting, precision shooting, competition, and lightweight rifle builds.

Each Helix 6 barrel carries a sub-½ MOA accuracy guarantee when used with match-grade ammunition, quality components, and by a capable shooter.

Key Features

• 6mm ARC Chamber – Designed for efficient performance with high-BC 6mm bullets.
• 6.5 Grendel Case Family – Compact cartridge design requiring the appropriate Grendel-family bolt face.
• Low Recoil & Efficient Ballistics – Excellent combination of shootability and long-range performance.
• Match-Grade 416R Stainless Steel Core – Button-rifled and hand-lapped for consistent performance.
• High-Carbon, Low-Resin Carbon Fiber – Designed for stiffness and thermal stability.
• Hand-Lapped Bore – Provides a smooth, consistent bore finish.
• Minimal POI Shift – Proprietary carbon fiber construction helps maintain point of impact during extended strings of fire.
• Prefit for Compatible Actions – Precision machined for installation on compatible rifle actions.
• Sub-½ MOA Accuracy Guarantee – When used with match-grade ammunition, quality components, and by a capable shooter.
• Muzzle Thread – 5/8-24

Bolt Face Disclaimer

Cartridge compatibility is dependent on the bolt face of your specific action. The 6mm ARC uses a Grendel-family bolt face and is not compatible with a standard .223 Remington/5.56 NATO bolt face. Verify that your action has the correct bolt face for the 6mm ARC cartridge before ordering. Helix 6 Precision does not modify or change the bolt face.

6mm ARC Specifications

Weights are approximate. As a general guideline, each additional 1" of barrel length adds approximately 1.5 oz of weight. Actual weight may vary slightly due to manufacturing tolerances, contour, and final machining.

Government Export Restriction

This item may be regulated for export by the U.S. Department of State or U.S. Department of Commerce. Please see our Export Policy prior to placing your order.

Government Restriction

By adding this item to your cart, you understand and agree to the Domestic Restricted Product Policy and certify that you will comply with all applicable federal, state, and local laws and regulations.