FAXON DUTY SERIES GUNNER PROFILE 20" RIFLE-LENGTH 5.56 NATO AR15 BARREL
Faxon
$205.00
(10 reviews)
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Faxon
FAXON DUTY SERIES GUNNER PROFILE 20" RIFLE-LENGTH 5.56 NATO AR15 BARREL
Faxon Duty Series Gunner Profile — 20" Rifle-Length 5.56 NATO (1:8 Twist)
Long-range accuracy with lightweight balance — the definitive 20" DMR-ready Gunner barrel.
The Faxon Duty Series 20" Gunner Profile 5.56 NATO barrel pairs the velocity and stability of a full-length barrel with the Gunner contour’s weight savings. By blending Government-level rigidity behind the gas block with Pencil-like forward weight reduction, it keeps your rifle quick on target without sacrificing precision — ideal for DMR, competition, and hunting builds.
Key Benefits
- Balanced Gunner profile: Gov’t strength + Pencil agility for superior handling and accuracy.
- Rifle-length gas system: Softest recoil impulse and consistent cycling, excellent for precision work and suppression.
- Full-length performance: 20" barrel maximizes 5.56 velocity and downrange consistency.
- Duty materials & QC: 4150 CMV, stress relieved, air-gauge tested, MPI inspected, and headspace verified.
- Corrosion resistant: Black nitride finished inside and out for long service life and easy cleaning.
- Lightweight for length: Weighs only 1.67 lb — maintains excellent balance for positional shooting.
Specifications
Why Choose the Gunner Profile
The Gunner profile shifts the balance point back toward the shooter, reducing fatigue and improving control during positional or offhand shooting. You get the confidence of a more rigid contour where it matters with the speed and maneuverability of a lighter front end — a proven formula for practical accuracy.
Installation & Compatibility
- Standard M4 barrel extension fits AR-15 uppers and bolts.
- Use a .625" gas block on the 1.9" journal; adjustable blocks recommended for suppressed use.
- 1/2-28 muzzle threads accept common brakes, comps, and suppressor adapters.
- Pair with a rifle-length gas tube and appropriate buffer for optimal reliability.
Frequently Asked Questions
Is the 20" length better for accuracy?
A 20" barrel typically yields higher velocity and more stable external ballistics, aiding downrange consistency.
Chrome-lined?
No — Faxon uses a black nitride treatment inside and out for corrosion resistance and easy cleaning.
Suppressor compatible?
Yes — rifle-length gas provides a smooth impulse when suppressed; an adjustable gas block helps fine-tune back-pressure.
Ideal bullet weights?
The 1:8 twist stabilizes common 55–77 gr 5.56 loads for match and duty applications.
Overview: 20" Rifle-Length Gunner Barrel
The Faxon Duty Series 20" Gunner Profile 5.56 NATO barrel brings true rifle-length performance to your AR-15, delivering higher velocity, mild recoil, and exceptional balance. Built from certified 4150 CMV steel and finished in black nitride, it’s engineered for long service life and repeatable precision.
Each barrel is stress relieved, air-gauge tested, and magnetic particle inspected, then headspace checked for reliability. The 11° target crown supports consistent bullet release and tight group potential. From practical DMRs to field-ready hunting rifles, the 20" Gunner is the lightweight long-barrel solution that keeps your rifle fast and accurate.
- Caliber:
- 5.56 NATO
- Barrel Profile:
- Gunner
- Barrel Material:
- 4150 CMV
- Rifling Twist Rate:
- 1:8
- Muzzle Thread:
- 1/2x28
- Gas Block Diameter:
- .625"
- Gas System Length:
- Rifle
- Barrel Length:
- 20"
- Outside Finish:
- QPQ Nitride
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Reviews
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Quality product
This is the second barrel I've purchased from Faxon... and again, I've been quite impressed with the quality of their products. You can't beat the price for all that you get. They also make it very easier to order and purchase. I love how you have the ability to order your gas tube and low profile gas block all at the same time. It just makes it easier. Keep up the good work Faxon! :)