FAXON DUTY SERIES PENCIL PROFILE 16" MID-LENGTH 5.56 NATO AR15 BARREL
Faxon
$185.00
(35 reviews)
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Faxon
FAXON DUTY SERIES PENCIL PROFILE 16" MID-LENGTH 5.56 NATO AR15 BARREL
Faxon Duty Series Pencil Profile — 16" Mid-Length 5.56 NATO (1:8 Twist)
Ultralight, balanced, and accurate — Faxon’s Pencil barrel optimized for all-day handling.
The Faxon Duty Series 16" Pencil Profile 5.56 NATO barrel is engineered for shooters who demand superior accuracy with minimal weight. Featuring Faxon’s signature Pencil contour, this barrel enhances agility and balance while maintaining precision and reliability. Ideal for lightweight builds, patrol rifles, and training carbines where speed and endurance matter.
Key Benefits
- Lightweight performance: The Pencil profile minimizes forward weight while retaining accuracy and heat control.
- Mid-length gas system: Smooth cycling, reduced recoil, and enhanced reliability for all shooting conditions.
- High-quality steel: Machined from 4150 CMV Mil-Spec steel, stress relieved, and air-gauge tested for precision.
- Corrosion-resistant finish: Black nitride inside and out for superior wear and easy maintenance.
- Lightweight yet strong: Weighs only 1.20 lbs — ideal for long sessions or fast-moving courses.
- Precision guaranteed: Each barrel is MPI-inspected and headspace checked for flawless performance.
Specifications
Why Choose the Pencil Profile
The Pencil profile offers maximum weight savings and maneuverability without sacrificing performance. It’s perfect for shooters who want an agile rifle for dynamic movement, field use, or long range days without fatigue. Despite its light weight, Faxon’s stress-relieved 4150 CMV steel and black nitride finish ensure durability and consistent accuracy.
Installation & Compatibility
- Standard M4 barrel extension fits all AR-15 upper receivers.
- Accepts .625" gas block on 1.1" journal; adjustable recommended for suppressed setups.
- 1/2-28 threads fit brakes, comps, and suppressor adapters.
- Compatible with mid-length gas tubes and standard AR-15 BCGs.
Frequently Asked Questions
Is this barrel good for a lightweight build?
Yes — the Faxon Pencil barrel minimizes forward weight, improving balance and control for lightweight rifles.
Is this barrel chrome-lined?
No — Faxon uses a black nitride treatment for smoother cleaning and superior corrosion resistance.
Can I use a suppressor with this barrel?
Yes — the mid-length gas system provides smooth cycling, especially with an adjustable gas block.
What bullet weights perform best?
The 1:8 twist stabilizes 55–77 grain bullets for reliable performance across various loads.
Overview: Lightweight 16" Mid-Length Pencil Barrel
The Faxon Duty Series 16" Pencil Profile 5.56 NATO barrel brings Faxon’s precision manufacturing and durability to a lightweight, agile design. With its mid-length gas system, this barrel delivers smooth recoil and consistent cycling for a wide range of AR-15 platforms.
Each barrel is made from 4150 CMV steel, button-rifled, stress relieved, air-gauge tested, and magnetic particle inspected. The black nitride finish protects inside and out, and the 11° target crown ensures consistent shot placement. Lightweight doesn’t mean fragile — this Pencil barrel is built for serious performance.
- Caliber:
- 5.56 NATO
- Barrel Profile:
- Pencil
- Barrel Material:
- 4150 CMV
- Rifling Twist Rate:
- 1:8
- Muzzle Thread:
- 1/2x28
- Gas Block Diameter:
- .625"
- Gas System Length:
- Mid
- Barrel Length:
- 16"
- Outside Finish:
- QPQ Nitride
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Reviews
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Pencil barrel
FAXON IS THE ONLY BARREL PRODUCTS I BUY AND TRUST MY LIFE WITH
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Duty Series 16in pencil barrel
Good barrel. Fast shipping. Would buy it again.
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Perfect for a light weight build
My second time getting one of these, and they always impress with their light weight and consistent accuracy.
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very nice product and very well made it is the 4th pencil barrel that I have bought from Faxon.
I have not shot this barrel yet but have 3 other Faxon Pencil barrels and they all shoot excellent, I love these barrels as they are light weight and still shoot well.
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16" pencil-profile barrel, cal. 5.56x45
Fit and finish are top-notch, as expected from Faxon. Initial testing with 55-grain FMJ handloads yielded accuracy as good as the Gunner-profile barrels on my other AR rifles. But this barrel is a bit lighter, and when combined with a minimalist stock and short free-float handguard, the resulting weapon is quick to the shoulder, balances nicely, and points naturally.
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5.56 pencil barrel
Nice finish, lite weight, good profile. Will buy again
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We bought two
We liked this barrel so much, we bought a second one as a backup to the one my Mrs installed on her AR-15. We have been getting great groups! Highly recommend.
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Very Light. Very accurate. Very well machined
Great barrel. Well machined. Very light and BODA accui. Awesome
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Good quality, but overgassed
I'm overall satisfied with my Faxon pencil barrel, but the one issue I have with it is that it's severely overgassed, causing significant bolt bounce during cycling. The issue was fixed with an adjustable gas block, but it shouldn't really be an issue in the first place with the common .223 and 5.56 loads I was using. Other than that, the barrel is made of quality materials, the finish is impeccable, and accuracy is good too, though anyone buying a pencil barrel should be aware it heats up fast, opening groupings up a bit once hot.