FAXON DUTY SERIES PENCIL PROFILE 14.5" MID-LENGTH 5.56 NATO AR15 BARREL
Faxon
$175.00
(18 reviews)
Write a Review
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
-
-
Sold Out
-
Sold Out
-
Sold Out
Reviews
-
Best Barrels in the Business!
These barrels are the best of both worlds: light and extremely accurate!
-
lightweight Build
Excellent quality at an affordable price!
-
Amazingly Light
Barrel went through a tough journey getting to me (showed up in a roughed up tube after being lost in the mail), but was well enough packed to not take any damage. Threw it on a light weight build with a pinned/welded muzzle device, and managed to hit the paper at 1.5 moa at 100 yards even though I'm a (really) bad shot. I would recommend these barrels to anyone and more than likely will be buying more in the future.
-
Excellent barrel
A very well done barrel. Exactly as described, and really light weight.
-
Premium barrel at reasonable price
I have purchased a number off Faxon barrels and found each to be accurate and machined/finished to impecable standards. All have installed with a minium amount of effort and headspace was proper.
-
excellent
Superior barrel very very light weight perfect for that light build And as always faxon is a great company to do business with. God Bless the Battle is never over. So Others May Live.
-
Great barrel!
What a fabulous product. I ordered mine through another online retailer as it was the only place in stock. Upon arrival I noticed the lightness of this barrel in comparison to other companies (cough voodoo cough Battle arms cough cough) this is hands down lighter and to those of us who are counting calories I mean ounces the barrel is very important. Not only that but the price of this product is much lower then those competitors competing for the same light weight builder parts. So then why did I only give it 4 stars you might ask. Well for starters my barrel appears to be slightly different then the stock photo provided by Faxon with its polished barrel insert being the obvious difference however I can understand covering exposed metal to prevent future failure. second would be the engraving which does not appear to be as nice as that which is photographed here and lastly the barrel weight which is advertised at 1.09 pounds or 17.44 ounces however on three separate scales my own personal mail scale a friends mail scale and a very accurate scale I use at work they averaged 19.29 ounces (1.205625 pounds) a full 1.85 ounces over what is advertised and for those of us counting ounces and grams that is huge! I wonder if Kaiser US rejects any barrels this far out of the advertised weight? That's the same weight I would expect for the 16" version. However with that said it is still the lightest most accurate barrel I have found at its price point and a full 4 ounces plus lighter then both those mentioned above. Would I buy this barrel again? Of course! Out of the 40+ AR's I have built over the last few years the product is simply amazing. the spread I was able to achieve was .54 inches at 100 yards using Hornady superformance GMX 55g which is my Coyote hunting ammo and what I build this rifle for.
-
Perfect!!!
Fit and finish is great, very light weight. The best part is I am able to consistantly shoot .74" groups with hand loads and a red dot sight. To say I'm happy would be a gross under statement!
-
WOW !!! No Regrets......
Switched out this 14.5" pencil on an upper with a 16" pencil that shot fantastic groups, Was just wondering if the shorter barrel would hold it's own. Well after a 200 round break in with green tip and a good cleaning I was thoroughly impressed. First group for accuracy was shot with the same green tip ammo and came in at 1 1/4 " using an aimpoint T1 at 100 yards. ( Shot out of a lead sled.) This barrel has found a home... Now I have to build another upper to give the 16" a place to work from. Damn the luck.