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FAXON PINNED GAS BLOCK PENCIL PROFILE 10.5" CARBINE-LENGTH 5.56 NATO AR15 BARREL
Faxon
$215.00
(3 reviews)
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Faxon
FAXON PINNED GAS BLOCK PENCIL PROFILE 10.5" CARBINE-LENGTH 5.56 NATO AR15 BARREL
Faxon Pinned Gas Block — 10.5" Pencil Profile 5.56 NATO AR-15 Barrel (Carbine Gas)
Factory pre-pinned .625" gas block included for maximum reliability in a lightweight Pencil profile.
The Faxon 10.5" Pencil Profile Barrel with Pinned Gas Block combines Faxon’s lightweight contour with a factory-installed, pre-drilled gas block and pin—saving time, effort, and ensuring long-term reliability. The gas block is pre-notched and pre-aligned in-house for a perfect fit every time.
Built from 4150 CMV steel and finished inside and out in black nitride, this Pencil contour barrel keeps weight to a minimum while maintaining accuracy and rigidity. Ideal for compact, maneuverable builds, this carbine-length barrel is stress relieved, air-gauge tested, MPI inspected, and headspace verified for duty-grade performance.
Key Benefits
- Factory-pinned .625" gas block: Precision aligned and installed for secure operation.
- Ultra-lightweight Pencil profile: Minimizes front-end weight for fast handling and reduced fatigue.
- Carbine-length gas system: Reliable performance with both unsuppressed and suppressed setups.
- Durable nitride finish: Resists wear, corrosion, and fouling for long-term use.
- Rigorous QC: Stress relieved, air-gauge tested, MPI-inspected, and headspace verified in-house by Faxon Firearms.
Specifications
Included: Barrel, low-profile gas block (hand-tightened for shipping), and retaining pin.
Frequently Asked Questions
Is the gas block already pinned?
Yes. The barrel is pre-notched, the gas block is pre-drilled and aligned, and the pin is included (hand-tightened for safe shipping).
What makes the Pencil profile different?
The Pencil contour is thinner and lighter than standard profiles, shifting the rifle’s balance closer to the shooter for faster handling and less fatigue.
Is this barrel suppressor-safe?
Yes. It’s nitride treated inside and out for durability and corrosion resistance, and fully capable of handling suppressed fire.
Overview: 10.5" Pinned Gas Block Pencil 5.56 Barrel
The Faxon 10.5" Pinned Gas Block Pencil Barrel delivers lightweight precision with duty-ready dependability. The Pencil profile minimizes weight while maintaining heat resistance and accuracy, and the factory-pinned gas block ensures your gas system stays locked in place even under heavy use.
Constructed from 4150 CMV steel and finished in QPQ nitride, every Faxon barrel is stress relieved, air-gauge tested, MPI-inspected, and headspace checked for consistent performance you can trust.
- 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:
- Carbine
- Barrel Length:
- 10.5"
- Outside Finish:
- QPQ Nitride
Reviews
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Quality
I purchased one of these barrels a few years ago for a lightweight AR pistol build I was attempting. I couldn't have been happier with the results. Completed I had a gun that is weighed in just under 6lbs Making it wieldy and extremely accurate. I credit the barrel for it's performance.
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Lightweight and Perfect
10.5” is your Ultimate home size. Customers love them
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1.5 pinned barrel
Top shelf quality. As a toolmaker I can pin a gas block but for the money it's not worth me setting up to do it. Beautiful work. I was going to message this with a Faxon BCG but after a months wait and only the boxed answer of "won't comment on delivery" I bought a Bravo Company BCG for it.