Faxon Integral 16 inch Pencil A2 5.56 barrel — slim integral flash hider, mid-length gas

FAXON INTEGRAL® SERIES 16" PENCIL A2 PROFILE MID-LENGTH 5.56 NATO AR15 BARREL

Faxon
SKU:
15A58M16NPQ-IMDF
|
UPC:
816341025110
$260.00
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Description

Faxon Integral® Series 16" Pencil A2 Profile — Mid-Length 5.56 NATO (1:8 Twist)

Ultra-lightweight Pencil barrel with an integral slim A2-style flash hider for a legal 16" OAL — no pin & weld required.

The Faxon Integral® Series 16" Pencil A2 5.56 NATO barrel delivers the maneuverability of a 14.5" barrel and the legal compliance of a 16" overall length — without any pin-and-weld work. Its integrally machined slim flash hider keeps weight to a minimum and preserves excellent flash reduction while maintaining perfect concentricity.

Built in-house from 4150 CMV steel and finished in black nitride, the Pencil profile shifts weight rearward for outstanding handling. Full-service QC — stress relieved, air-gauge tested, MPI-inspected, and headspace verified — ensures the accuracy and reliability Faxon is known for.

Key Benefits

  • Integral slim A2 flash hider: Machined as part of the barrel for perfect alignment and a clean, lightweight front end.
  • 16" legal OAL: 14.5" rifled section extended by the integral device — compliant without pin & weld.
  • Pencil profile: Faxon’s lightest contour for superior balance and quick target transitions.
  • Mid-length gas system: Smooth recoil impulse and reliable cycling across common 5.56 loads.
  • Durable construction: 4150 CMV steel with nitride finish inside and out for wear and corrosion resistance.
  • Precision QC: Each barrel is MPI-inspected and headspace checked for dependable performance.

Specifications

Caliber
5.56 NATO
Rifled Length
14.5" rifled, 16" overall length with integral flash hider
Profile
Pencil
Muzzle Device
Integral Slim A2-Style Flash Hider
Material
4150 CMV Steel
Rifling
Button-Rifled, 1:8 Twist
Finish
Salt Bath Nitride (inside & out)
Gas System
Mid-Length
Gas Block Diameter
.625"
Gas Block Journal Length
1.1"
Barrel Extension
M4
Weight
1.19 lb (approx.)
Crown
11° Target Crown

Note: Cannot be shipped to CA.

Why Choose the Faxon Integral® Series

The Integral® Series eliminates the hassle of pin-and-weld by machining the muzzle device directly into the barrel. You get a legally compliant 16" overall length with the freedom to install or remove handguards, barrel nuts, and gas blocks during future upgrades — all while maintaining precise alignment and a streamlined, lightweight front end.

Frequently Asked Questions

Is this barrel legal for rifle builds?
Yes. The integrally machined flash hider brings the overall length to 16", so no pin & weld or NFA registration is required.
Can I remove or change the flash hider?
No. It’s integral to the barrel for strength, concentricity, and compliance.
Which gas blocks fit?
Use a .625" gas block on the 1.1" journal; low-profile or adjustable blocks are both compatible.

Overview: Faxon Integral 16" Pencil A2 Barrel

The Faxon Integral® 16" Pencil A2 Profile 5.56 NATO barrel is built for shooters who want maximum agility with zero gunsmithing. A 14.5" rifled section and integral slim A2-style flash hider deliver a compliant 16" overall length, while the Pencil profile keeps your rifle light and responsive. Constructed from 4150 CMV steel with a nitride finish, this barrel is stress relieved, air-gauge tested, MPI-inspected, and headspace verified for dependable accuracy.

Additional Information
Caliber:
5.56 NATO
Barrel Profile:
Pencil
Barrel Material:
4150 CMV
Rifling Twist Rate:
1:8
Muzzle Thread:
N/A
Gas Block Diameter:
.625"
Gas System Length:
Mid
Barrel Length:
16"
Outside Finish:
QPQ Nitride
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