FAXON DUTY SERIES PENCIL PROFILE 16" MID-LENGTH 5.56 NATO AR15 BARREL
Faxon
$185.00
(35 reviews)
Write a Review
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
-
-
Sold Out
-
-
Reviews
-
Pencil barrel
Nice fit and finish, fairly light.
-
Pencil 556
Very elegant and cleanly machined. The high gloss finish is also a nice touch.
-
16" PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ
I have built several "loaner uppers" to send out to gun writers to review our QRB takedown system. One writer planned a grouping test without telling use. I sent him the loaner that had just come back from a tester doing 60 round full auto drum dumps. The barrel still shot sub-MOA! Out of an abused pencil with barrel! Faxon Barrels is my go to choice for barrels.
-
16" Pencil Barrel
This barrel is lightweight and extremely accurate. I have bought 7 of them so far and will continue to buy this model in the future.
-
light and accurate
This is hands down the best light weight barrel on the market. Buy it...you won't be sorry you did.
-
The reviews are legit!
Purchased the pencil barrel a few weeks ago building a lightweight coyote night rig. Wanted it light because the night scope weighs 3 lbs. The rifle came out under 10 lbs with the scope.Used Hornady factory ammo 55gr vmax. Sighted it in at 100. entered the ballistic data in the scope. walked a self healing target out to a random distance. Hit the target with the range finder at 258 yards. set the range in the scope shot 3 rounds in a tad under an inch. I have much heavier barrels that can't do this.
-
great penicl barrel
Put this barrel on a skinny AR15 build, added a mlok MI G3 rail and it's insanely light up front. Shot great right out of the box.
-
Best barrel on the market today
Have used a lot of Faxon barrels especially there PENCIL PROFILE BARREL, which meet or exceeds all expectation for accuracy and quality will continue to build on all FAXON barrels
-
Great Barrel, Within 1/2 MOA Precision, Light Weight
Used this Pencil Profile barrel plus the corresponding gas block and gas tube offered from Faxon on 4 builds by now - absolutely love them. This barrel is is the finishing touch of a 5.6 lbs. AR 15 build for my wife and "we" love it. Light weight, very precise and helps with the overall balance of her rifle. Very light upfront with most of the weight perfectly centered. I can definitely recommend this product