Faxon Firearms121687967
Faxon Firearms Duty Series 15A58R18NGQ 5.56 18" Gunner Nitride Rifle$176.04
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Availability: In Stock
The Faxon Firearms Duty Series 5.56mm 20" Gunner Nitride rifle barrel is a purpose-built replacement barrel for shooters who want the best of both worlds: the rugged durability of a full government profile with the speed and handling of a lighter pencil design. Engineered and manufactured in Cincinnati, Ohio, this barrel combines thoughtful geometry with uncompromising quality control, making it a solid choice for rifle builders, competition shooters, and hunters who demand accuracy and reliability without unnecessary weight.
The Gunner profile is Faxon's answer to finding the sweet spot between a heavy, durable profile and a nimble, fast-handling one. That balance translates to less fatigue during long range sessions, training days, or extended hunting trips—your shoulders will thank you by day two. Built from certified 4150 Mil-Spec steel and finished inside and out in Nitride, this barrel is stress relieved and air-gauge tested at the factory. Every barrel is individually headspaced using precision PTG gauges and crowned to a 11-degree target spec to support consistent accuracy downrange.
The 1:8 twist rate runs the 20-inch length as a rifle-gas system, making this barrel compatible with standard AR-15 platforms in 5.56 NATO. The 1/2-28 muzzle thread accepts industry-standard suppressors and muzzle devices. Whether you're building a recce rifle, a lightweight hunting rig, or a do-it-all training upper, Faxon's attention to materials and process—button rifling, stress relief, multiple test passes—delivers accuracy and durability that punches above the price point.
| Caliber | 5.56 NATO |
| Barrel Length | 20 inches |
| Barrel Profile | Gunner |
| Twist Rate | 1:8 |
| Material | 4150 Mil-Spec steel |
| Rifling | Button rifled |
| Gas System | Rifle length |
| Inside Finish | Nitride |
| Outside Finish | Nitride |
| Muzzle Thread | 1/2-28 |
Yes, the Faxon Gunner barrel is a standard AR-15 replacement barrel in 5.56 NATO with a rifle-length gas system and 1/2-28 muzzle thread. It will fit any AR-15 upper receiver designed for standard 5.56 NATO barrels, provided your lower is properly assembled and headspaced.
The 1/2-28 muzzle thread is the standard AR-15 specification. It accepts any suppressor, flash hider, compensator, or other muzzle device threaded for 1/2-28.
The Gunner profile is a hybrid designed to blend the ruggedness and durability of the government profile with the lighter weight and faster handling of the pencil profile. This balance reduces fatigue during extended shooting, training, or hunting sessions while maintaining the strength you need for reliable performance.
Faxon headspaces every barrel individually using precision PTG gauges to ensure proper fit and reliable feeding and extraction. Combined with stress relief, air-gauge testing, and button rifling, this process supports accuracy and the barrel's long-term durability and consistency.
SKU: 121687966 • Weight: 1.69oz
Availability: In Stock
The Faxon Firearms Duty Series 5.56mm 20" Gunner Nitride rifle barrel is a purpose-built replacement barrel for shooters who want the best of both worlds: the rugged durability of a full government profile with the speed and handling of a lighter pencil design. Engineered and manufactured in Cincinnati, Ohio, this barrel combines thoughtful geometry with uncompromising quality control, making it a solid choice for rifle builders, competition shooters, and hunters who demand accuracy and reliability without unnecessary weight.
The Gunner profile is Faxon's answer to finding the sweet spot between a heavy, durable profile and a nimble, fast-handling one. That balance translates to less fatigue during long range sessions, training days, or extended hunting trips—your shoulders will thank you by day two. Built from certified 4150 Mil-Spec steel and finished inside and out in Nitride, this barrel is stress relieved and air-gauge tested at the factory. Every barrel is individually headspaced using precision PTG gauges and crowned to a 11-degree target spec to support consistent accuracy downrange.
The 1:8 twist rate runs the 20-inch length as a rifle-gas system, making this barrel compatible with standard AR-15 platforms in 5.56 NATO. The 1/2-28 muzzle thread accepts industry-standard suppressors and muzzle devices. Whether you're building a recce rifle, a lightweight hunting rig, or a do-it-all training upper, Faxon's attention to materials and process—button rifling, stress relief, multiple test passes—delivers accuracy and durability that punches above the price point.
| Caliber | 5.56 NATO |
| Barrel Length | 20 inches |
| Barrel Profile | Gunner |
| Twist Rate | 1:8 |
| Material | 4150 Mil-Spec steel |
| Rifling | Button rifled |
| Gas System | Rifle length |
| Inside Finish | Nitride |
| Outside Finish | Nitride |
| Muzzle Thread | 1/2-28 |
Yes, the Faxon Gunner barrel is a standard AR-15 replacement barrel in 5.56 NATO with a rifle-length gas system and 1/2-28 muzzle thread. It will fit any AR-15 upper receiver designed for standard 5.56 NATO barrels, provided your lower is properly assembled and headspaced.
The 1/2-28 muzzle thread is the standard AR-15 specification. It accepts any suppressor, flash hider, compensator, or other muzzle device threaded for 1/2-28.
The Gunner profile is a hybrid designed to blend the ruggedness and durability of the government profile with the lighter weight and faster handling of the pencil profile. This balance reduces fatigue during extended shooting, training, or hunting sessions while maintaining the strength you need for reliable performance.
Faxon headspaces every barrel individually using precision PTG gauges to ensure proper fit and reliable feeding and extraction. Combined with stress relief, air-gauge testing, and button rifling, this process supports accuracy and the barrel's long-term durability and consistency.
SKU: 121687966 • Weight: 1.69oz