FAXON DUTY SERIES PENCIL PROFILE 14.5" MID-LENGTH 5.56 NATO AR15 BARREL
Faxon
$175.00
(18 reviews)
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Faxon
FAXON DUTY SERIES PENCIL PROFILE 14.5" MID-LENGTH 5.56 NATO AR15 BARREL
Faxon Duty Series Pencil Profile — 14.5" Mid-Length 5.56 NATO (1:8 Twist)
Ultralight, accurate, and durable — precision performance for your next AR-15 build.
The Faxon Duty Series 14.5" Pencil Profile 5.56 NATO barrel is built for shooters who demand exceptional handling and precision without added weight. Featuring Faxon’s signature lightweight contour, this barrel enhances maneuverability while maintaining the accuracy and durability expected from a duty-grade component. Ideal for pin-and-weld builds and those who value a lightweight rifle platform.
Key Benefits
- Ultralight design: The Pencil profile minimizes forward weight while maintaining rigidity for accuracy and heat control.
- Mid-length gas system: Delivers smooth cycling and reduced recoil compared to carbine-length setups.
- Duty-ready materials: Machined from certified 4150 CMV steel with a black nitride finish inside and out.
- Pin-and-weld friendly: 14.5" length allows legal 16" OAL when permanently attaching a muzzle device.
- Precision engineered: Fully stress relieved, air-gauge tested, and magnetic particle inspected to ensure accuracy and reliability.
- Lightweight advantage: Weighs only 1.15 lbs — perfect for fast transitions and reduced shooter fatigue.
Specifications
Why Choose the Pencil Profile
The Pencil profile offers unmatched weight savings without sacrificing performance. It’s ideal for shooters who value agility, balance, and reduced fatigue. Despite its lightweight design, Faxon’s Pencil barrels maintain excellent heat dissipation, accuracy, and service life thanks to 4150 CMV construction and a black nitride finish.
Installation & Compatibility
- Fits standard AR-15 upper receivers via M4 barrel extension.
- Uses .625" gas block on a 1.1" journal for compatibility with lightweight components.
- 1/2-28 threads fit common muzzle devices and suppressor adapters — ideal for pin-and-weld configurations.
- Best paired with a mid-length gas tube and lightweight handguard for superior balance.
Frequently Asked Questions
Is this barrel suitable for duty use?
Yes — Faxon’s Pencil barrels maintain precision and heat control thanks to stress relief and nitride finishing.
Can I suppress this barrel?
Yes — the mid-length gas system pairs well with adjustable gas blocks for suppressed operation.
Is this barrel chrome-lined?
No — it uses a black nitride treatment for a smoother bore and enhanced corrosion resistance.
What ammo weights perform best?
The 1:8 twist stabilizes 55–77 grain 5.56 rounds commonly used for defense and precision.
Overview: Lightweight 14.5" Mid-Length Pencil Barrel
The Faxon Duty Series 14.5" Pencil Profile 5.56 NATO barrel is built for shooters who value speed, balance, and accuracy. With its mid-length gas system and lightweight contour, this barrel delivers smooth cycling, reduced front-end weight, and exceptional handling in dynamic environments.
Each barrel starts as certified 4150 CMV steel, button-rifled and stress-relieved for accuracy and durability. It’s then nitride finished inside and out for superior corrosion resistance, wear protection, and ease of cleaning. Every barrel is air-gauge tested, magnetic particle inspected, and headspace verified for true duty-grade reliability.
Whether you’re building a lightweight carbine, a competition rifle, or a tactical setup, the 14.5" Pencil Profile offers the precision, balance, and weight savings that make it a Faxon favorite.
- 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:
- 14.5"
- Outside Finish:
- QPQ Nitride
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Reviews
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Barrel
Great fit and finish Shot great
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Worked Flawlessly
Amazing finish, perfect for my 16.1” build Shoots great!
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First AR 15 Build
This is my first AR build and I needed a barrel o finish it out. I have heard good things about Faxon products so I figured I’d give it a try. The finish and fit of the barrel look great. Haven’t had a chance to test things out at the range but everything looked good. Hoping to have many years of service with this build.
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Faxon 14.5 barrel
I bought this Faxon 14.5" for a lightweight Ar build for my wife. She doesn't have the strength to hold a full weight 16" barreled Ar so this worked out nicely. I took it to the local range to sight it in at 100yards and adjust the gas key in the lightweight bcg. I was getting sub moa groups after the barrel was broken in and the gas key was adjusted. I use the X-ring barrel break in process seen in YouTube. I have since bought another 14.5", 16" and a .308 pencil profile for my other ar's and a ar10 build Im currently working on. These are great barrels that are light and shoot straight for a good price.
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Lightweight Awesomeness
I’ve bought several of these and I couldn’t be happier. Accurate without the extra weight, these make an excellent all around carbine. The mid length gas system is perfect. Honestly, it’s unlikely I’ll ever build another AR without buying a Faxon barrel. I’m that in love with it.
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14.5 pencil barrel
All around great barrel. 1 issue though. The feed ramps are rough, alot of tooling marks. In my opinion the ramps are unacceptable. I can polish them out but I will be removing the finish to do so. Not happy about that. Faxon Staff Note - We're sorry to hear that and ALWAYS happy to ensure your satisfaction. Contact our customer service so we can get you an RMA label!
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Why spend more for a less quality barrel?????
I've built multiple rifles for clients using the Faxon products, specifically the barrels. Having nearly 35 years experience as a gunsmith and high end custom weapons building, it's a real pleasure to use such high quality products, that are very reasonably priced! I believe in the Faxon products, enough to use them for military, law enforcement, and more recently my wife and daughter's custom rifles!
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The best barrels currently out
Loved the barrel so much I bought another within 1 week. Barrels are very light and take weight of the far end of the rifle which helps to better balance the rifle making it feel even lighter then it is. Accuracy is right up there with my $450 stainless 416r poly rifling barrels. I have the barrel paired with a lightweight bcg and SLR sentry 6 adjustable gas block and will be running this setup with ALL future rifle builds.
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Quality barrel
I am a full time LE firearms instructor with a State police academy, and have one of these barrels installed on my primary training rifle. It is the lightest quality barrel I have been able to find, period! I have this rifle slung hours on end, and appreciate the reduced weight. With that said, there is no sacrifice of accuracy for the weight savings. These barrels are very accurate as well. I have purchased 3 of these barrels and all of them have performed flawlessly. The fit, finish, and quality are unequaled. I couldn't be happier with the customer service that I have received from Faxon! They are a great people, making quality components.