Faxon Firearms 15Barc75M16Ngq5Rnp3 Match Series 6Mm Arc 16" Salt Bath Nitride 416-R Stainless Steel Barrel

The Faxon Firearms Match Series 6mm ARC barrel is a precision-engineered component built for shooters who demand accuracy and durability in a modern intermediate rifle platform. This 16-inch barrel combines Faxon's in-house manufacturing expertise with battle-tested materials and finishing to deliver match-grade performance whether you're training at the range, hunting, or building a reliable duty rifle. The Gunner profile strikes a practical balance between the robustness of a government-profile barrel and the lighter handling of a pencil design, bringing the balance point closer to your body to reduce shooter fatigue during extended sessions.

Starting with 416-R stainless steel bar-stock, this barrel features 5R button rifling—a hybrid design that places lands directly opposite grooves with reduced sharp angles. This geometry minimizes bullet jacket deformation, supporting higher velocities and easier cleaning between shots. The bore and exterior receive salt bath nitride treatment, a durable surface hardening that locks in bore consistency, extends barrel life, and resists environmental corrosion. The M4 barrel extension is coated in Nickel Teflon for slick dry lubricity and superior corrosion resistance; that coating also tightens the mechanical fit between extension and receiver, a detail that translates directly to improved accuracy.

Faxon backs this build with magnetic particle inspection to catch any material flaws before the barrel ships. The muzzle is recessed and crowned for target-grade consistency. At 1.57 pounds, the Gunner profile keeps weight reasonable without sacrificing the strength needed for hard use. Threaded 5/8x24 for common muzzle devices, with a .750-inch gas block diameter and 1.9-inch journal, this barrel integrates cleanly into mid-length or rifle-length gas systems.

The Match Series delivers performance value without compromise—a no-nonsense choice for shooters building or upgrading an AR platform in 6mm ARC.

Key Features

• 416-R stainless steel construction manufactured in-house for quality control
• 5R button rifling reduces jacket deformation and supports clean, easy maintenance
• Salt bath nitride treatment inside and out for extended bore life and corrosion resistance
• Gunner profile balances durability with weight and maneuverability
• M4 extension with Nickel Teflon coating for tight receiver fit and dry lubricity
• Recessed target crown for consistent accuracy
• Magnetic particle inspected for material integrity
• 5/8x24 muzzle threading for common suppressors and muzzle devices

Specifications

Frequently Asked Questions

What is the Gunner profile, and how does it compare to other barrel profiles?

The Gunner profile blends the strength and durability of a government profile with the lighter weight and maneuverability of a pencil profile. This hybrid design brings the rifle's balance point closer to your body, reducing fatigue during long training sessions, hunts, or duty work.

Will this barrel work with my AR platform rifle?

Yes, this barrel is designed for standard AR-15 platforms in 6mm ARC. It features an M4 extension, 0.750-inch gas block diameter, and 1.9-inch journal length compatible with mid-length and rifle-length gas systems. Verify your upper receiver is chambered in 6mm ARC before purchase.

What does the 5R rifling do?

5R is a hybrid rifling with lands positioned directly opposite grooves and reduced sharp angles. This design minimizes deformation of bullet jackets, supports higher velocities, and makes cleaning easier compared to traditional four-groove rifling.

What muzzle devices will fit this barrel?

The barrel is threaded 5/8x24 TPI, the standard thread pitch for most modern suppressors, muzzle brakes, and flash hiders. Verify the specifications of your intended muzzle device before installation.