The Faxon Firearms Gunner Duty Series Barrel (brand part no. 15A58M139NGQ) is a 13.9-inch, 5.56 NATO AR15 barrel cut in Faxon’s Gunner profile, a blend of the Government and Pencil profiles that keeps the durability of a Government-profile barrel while trimming weight and improving maneuverability. Faxon Firearms machines this barrel from certified 4150 mil-spec chrome moly vanadium steel and finishes it in black nitride, stress relieving and air-gauge testing every barrel before cutting an 11-degree target crown. The balance point of the Gunner profile brings weight back toward the shooter’s body, reducing fatigue during long range days, training, or hunting.

Key Specifications

• Chambered in .223 Rem / 5.56 NATO.
• 13.9-inch barrel length.
• 1:8-inch twist rate.
• Cut in Faxon’s Gunner profile, blending Government and Pencil profile traits.
• Machined from certified 4150 mil-spec chrome moly vanadium steel.
• Finished in black nitride.
• Fully stress relieved and air-gauge tested.
• 11-degree target crown for accuracy.
• Individually checked for headspace with precision PTG gauges.
• Manufactured in-house in Cincinnati, Ohio.

Frequently Asked Questions

What is the Gunner profile? A blend of the Government and Pencil profiles for durability with reduced weight.

What twist rate does it use? 1:8-inch.

Is every barrel headspace checked? Yes, each one is individually checked with precision PTG gauges.

Buy the Faxon Firearms Gunner Duty Series Barrel

Balance durability and weight savings on your next 5.56 build. Order it from our AR15 barrels selection at our Lubbock, Texas gun shop for fast, direct shipping.