Faxon Firearms  |  SKU: RSR-FX10A810R18NGQ

Faxon Firearms - Duty Series Gunner Profile 18" .308 Win AR10 Barrel

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Description

The Faxon Duty Series Gunner Profile 18" .308 Win AR10 Barrel is designed to address common concerns with AR-10 rifles, namely weight and recoil. This barrel features a rifle-length gas system, which provides the softest recoil impulse possible for a big-bore AR. The Gunner profile maintains a .750" body behind the gas block, a .875" step at the block, and a .600" section ahead, resulting in a lightweight construction at just 2.13 lbs. This design allows users to reduce the overall weight of their rifle while enhancing accuracy, making it ideal for hunting, designated-marksman roles, or general-purpose use.

Constructed from 4150 CMV steel, this barrel is button rifled with a 1:10 twist and features a salt-bath QPQ nitride finish for enhanced hardness and corrosion resistance. The barrel is shipped with a DPMS-pattern .308 extension installed and headspaced, ensuring reliable performance. It has been recognized as a top aftermarket barrel, receiving the Gold Award from Shooting Sports Retailer every year since 2022.

Key Features

  • Caliber: .308 Winchester, SAAMI; compatible with 7.62x51 NATO
  • Length: 18.13" (18" nominal)
  • Profile: Gunner (AR-10); lightweight and optimized for balance
  • Material: 4150 CMV bar stock
  • Finish: Salt-bath QPQ nitride, bore and exterior
  • Rifling Twist Rate: 1:10 RH, 4-groove button rifling
  • Gas System: Rifle-length; .093" port, reamed to size
  • Weight: 2.13 lbs
  • Muzzle Thread: 5/8x24 UNEF-2A, target crown
  • Made in: Greater Cincinnati, Ohio, USA

Specifications

  • Gas Block Diameter: .750"
  • Gas Journal: .750" (.7490–.7497"), 1.9" long
  • Headspace: 100%, .308 go/no-go gauge after assembly
  • Extension: FF-300 DPMS Gen 1 pattern .308 extension, black oxide, torqued to 150 ft-lb, pinned
  • Chamber: The .308 Win chamber is cut and checked with a headspace gauge; chamber surfaces are held to a 20 Ra finish
  • Button Rifle: A carbide button is pulled through from the chamber end to form four grooves, right-hand, one turn in 10 inches, to a .3095" groove diameter
  • MPI and Nitride: 100% wet magnetic-particle inspected and salt-bath QPQ nitrided
  • Warranty: Faxon Lifetime Guarantee

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Frequently Asked Questions

What makes the Faxon Duty Series Gunner Profile 18" .308 Win AR10 Barrel suitable for reducing recoil?

The Faxon Duty Series Gunner Profile 18" .308 Win AR10 Barrel is designed with a rifle-length gas system that helps to soften the recoil impulse. This feature is particularly beneficial for shooters who are sensitive to recoil or who require rapid follow-up shots. By managing the gas flow efficiently, the barrel reduces the felt recoil, making it easier to maintain accuracy and control during shooting sessions. This is especially useful in hunting or tactical scenarios where precision and speed are crucial.

How does the lightweight construction of this barrel impact its performance?

Weighing only 2.13 lbs, the Faxon Duty Series Gunner Profile barrel is designed to reduce the overall weight of your AR-10, enhancing maneuverability. This lightweight design is achieved without compromising the barrel's strength or accuracy. The reduced weight makes it easier to carry the rifle over long distances, which is advantageous for hunters and marksmen who need to remain mobile. However, users should be aware that lighter barrels may heat up more quickly during extended firing sessions, which can affect accuracy if not managed properly.

What materials are used in the construction of the Faxon Duty Series Gunner Profile barrel?

The barrel is constructed from 4150 CMV steel, known for its durability and strength. This material is commonly used in military-grade firearms due to its ability to withstand high temperatures and pressures. The barrel also features a salt-bath QPQ nitride finish, which enhances its hardness and corrosion resistance, ensuring longevity even in harsh environments. This combination of materials makes it a reliable choice for various shooting conditions.

How does the barrel's rifling twist rate affect its performance?

The Faxon Duty Series Gunner Profile barrel features a 1:10 twist rate, which is optimal for stabilizing heavier .308 caliber bullets. This rifling twist rate ensures that projectiles maintain a stable flight path, improving accuracy over longer distances. It is particularly beneficial for precision shooting and hunting, where bullet stability can significantly impact shot placement. However, shooters should match their ammunition choice to the twist rate to achieve the best results.

What are the benefits of the DPMS-pattern .308 extension included with the barrel?

The DPMS-pattern .308 extension is pre-installed and headspaced, ensuring reliable performance right out of the box. This extension is designed to fit seamlessly with compatible AR-10 platforms, reducing the need for additional modifications. By providing a precise fit and proper headspacing, it enhances the overall reliability and safety of the firearm. This feature is particularly valuable for users who prefer a straightforward installation process.

In what scenarios is the Faxon Duty Series Gunner Profile barrel most effective?

The barrel's design makes it ideal for hunting, designated-marksman roles, and general-purpose use. Its lightweight construction and reduced recoil make it suitable for scenarios where mobility and accuracy are essential. For hunters, the barrel's balance and precision are advantageous in tracking and engaging targets. In tactical settings, the barrel's features support quick target acquisition and sustained accuracy, making it a versatile component for various applications.

How does the salt-bath QPQ nitride finish contribute to the barrel's durability?

The salt-bath QPQ nitride finish significantly enhances the barrel's surface hardness and corrosion resistance. This treatment creates a durable layer that protects against wear and environmental damage, extending the barrel's lifespan. It is particularly beneficial for shooters who operate in challenging conditions, as the finish helps maintain performance and appearance over time. However, while the finish provides excellent protection, regular maintenance is still recommended to ensure optimal performance.

What considerations should be made when selecting ammunition for this barrel?

When selecting ammunition for the Faxon Duty Series Gunner Profile barrel, consider the 1:10 twist rate and the .308 Win chamber. This twist rate is best suited for heavier bullets, typically in the range of 168 to 180 grains. Using ammunition that matches the barrel's specifications will optimize accuracy and performance. Additionally, ensure that the ammunition is compatible with both .308 Winchester and 7.62x51 NATO standards, as the barrel supports both calibers.

How does the barrel's design enhance accuracy for long-range shooting?

The Faxon Duty Series Gunner Profile barrel's design, including its rifling and gas system, contributes to enhanced accuracy. The 1:10 twist rate stabilizes heavier bullets, while the rifle-length gas system reduces recoil, allowing for more precise follow-up shots. The barrel's lightweight profile also aids in maintaining a steady aim, which is crucial for long-range engagements. These features collectively support improved shot placement and consistency at extended distances.

What awards or recognitions has the Faxon Duty Series Gunner Profile barrel received?

The Faxon Duty Series Gunner Profile barrel has been recognized with the Gold Award from Shooting Sports Retailer every year since 2022. This accolade highlights the barrel's performance and quality in the aftermarket category. Such recognition is a testament to its reliability and effectiveness, making it a trusted choice for shooters looking to upgrade their AR-10 platforms. The award underscores the barrel's reputation for excellence among both consumers and industry professionals.