Faxon Firearms Big Bore .458 Socom 16‚Äö√Ñ√Π 1-14 Gunner Contour Bbl Nitride

The Faxon Firearms Big Bore .458 SOCOM 16-inch Gunner Contour barrel is built for shooters serious about AR-platform power. If you're assembling a short-range thumper or need devastating stopping force in a compact package, this .458 SOCOM barrel delivers the foundation a big-bore build demands. Machined from 4150 CMV steel and treated with salt-bath Nitride finish, it's engineered to handle the high pressures and abuse that come with pushing heavy projectiles downrange.

The 1:14 twist rate is optimized for .458 SOCOM ballistics, and button-rifling ensures consistent accuracy shot to shot. A threaded muzzle and 11-degree target crown come standard, giving you flexibility for suppressor mounting or muzzle device choice while maintaining precision. The Nitride treatment does double duty: it resists corrosion in field conditions and stands up to the wear of repeated cycling and cleaning.

This is a pistol-length gas system barrel, which keeps overall length manageable for close-quarters work or vehicle-based rigs. Whether you're building a compact hunting rifle, a specialized defense carbine, or just want to experience what true AR-platform stopping power feels like, the Faxon Gunner Big Bore gives you a no-nonsense platform to start from.

Key Features

• 4150 CMV steel construction for durability under heavy loads
• Button-rifled bore for inherent accuracy
• Salt-bath Nitride finish for corrosion and wear resistance
• Threaded muzzle for suppressor or muzzle device compatibility
• 11-degree target crown for precision and protection
• Optimized 1:14 twist rate for .458 SOCOM ballistics
• Pistol-length gas system configuration

Specifications

Frequently Asked Questions

What AR-15 builds work with a .458 SOCOM barrel?

The .458 SOCOM is a specialized large-caliber cartridge designed for AR-platform rifles. This barrel will work with standard AR-15 upper receivers and lower assemblies that are compatible with big-bore conversions. You'll want to verify compatibility with your specific receiver and ensure your bolt carrier group and magazines are rated for the cartridge.

Is this barrel suitable for hunting?

The .458 SOCOM is used for hunting applications, particularly close-range work where its substantial power is an asset. The 16-inch barrel length and pistol-length gas system make it well-suited to hunting rigs where maneuverability and compact profiles are valued.

What muzzle devices can I attach?

The barrel features a threaded muzzle, allowing you to mount suppressors, brakes, or flash hiders with the appropriate thread pitch. Verify the thread size and pitch with Faxon Firearms to ensure compatibility with your chosen muzzle device.

Does the Nitride finish require special maintenance?

Salt-bath Nitride is a hard, corrosion-resistant finish that requires only standard rifle maintenance. Clean and maintain it as you would any quality barrel—no special treatment needed.