Faxon 5.56 NATO 14.5″ Pencil Barrel w/ Slim 3 Port Brake

Faxon 5.56 NATO 14.5″ Pencil Barrel w/ Slim 3 Port Brake


Massive AR Barel Sale
14.5″ Pencil w/ Slim 3 Port Brake, 5.56, 4150, Nitride
Availability: In stock SKU: 15A58M14NPQ-PMB3

Gas Tubes

Gas tubes include a roll pin.

Gas Blocks

Low profile gas blocks.

  • Description
  • Additional information
  • Reviews (0)
  • Questions & Answers


Faxon 5.56 NATO 14.5″ Pencil Barrel w/ Slim 3 Port Brake

Faxon 5.56 NATO 14.5″ Pencil w/ permanently attached muzzle brake. 16.1” OAL

Manufactured 100% in-house from gun-barrel-quality bar-stock, the Faxon 5.56 NATO 14.5″ Pencil Barrel w/ Slim 3 Port Brake starts with 4150 Chrome Moly Vanadium Mil-Spec steel. From there, the barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. This beautiful 5.56 NATO 14.5″ Pencil barrel w/ Slim 3 Port Brake is individually checked for headspace by precision custom hardened gauges.

We’ve taken them a step further, adding in our patent-pending permanently attached SLIM muzzle devices. Shooters can choose from a 3 port muzzle device or three-prong flash hider, both allowing the full assembly and disassembly of gas blocks and barrel nuts. Shooters are forever free to change their weapon’s configuration without having to go to a gunsmith.

Faxon Pencil barrels are the lightest in the industry. Don’t just taken their word for it, major companies like Robar, Kaiser US, 2A Armament, and others choose Faxon Pencils for their ideal balance of weight and performance.


Product Specifications

  • Manufacturer: Faxon Firearms
  • Part #: 15A58M14NPQ-PMB3
  • UPC: 816341022256
  • Barrel Material: 4150 Certified Gun Barrel Quality Steel
  • Barrel Type: Button Rifled
  • Caliber: 5.56 NATO
  • Twist: 1:8
  • Length: 14.5” Rifled, 16″ legal w/ permanent muzzle device attached*
  • Profile: Pencil
  • Muzzle Device: SLIM Tri-Port brake
  • Gas System: Mid
  • Inside Finish: QPQ Nitride
  • Outside Finish: QPQ Nitride
  • Muzzle Thread: 1/2-28 TPI (Threads Per Inch)
  • Gas Block Diameter: .625″
  • Gas Port Diameter: .078″
  • Journal length: 1.1″
  • Barrel Extension: M4
  • Weight: 19.52 oz
  • Magnetic Particle Inspected!
  • 11-degree Target Crown
  • MSRP: $259.00

*Please note muzzle devices are attached permanently. Any attempt to remove the device will result in the destruction of the barrel and void all warranties.

Arm or Ally is a stocking dealer for all Faxon Firearms, Ballistic Advantage, Rosco Manufacturing, Aero Precision, Toolcraft, Elftmann Tactical, HIPERFIRE and more. See our growing inventory of AR Parts and Reloading Components.

Additional information

Weight 23 oz
Dimensions 18 × 2 × 2 in

QPQ Nitride




5.56 NATO




4150 Chrome Moly Vanadium


Barrel, Upper Receiver Parts







Muzzle Thread

1/2 x 28

Gas Block Diameter



There are no reviews yet.

Be the first to review “Faxon 5.56 NATO 14.5″ Pencil Barrel w/ Slim 3 Port Brake”