Faxon 14.5" 556 NATO Gunner Barrel w/ Pinned Gas Block


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Faxon 14.5″ 556 NATO Gunner Barrel w/ Pinned Gas Block

Pre-drilled journal and low-profile gas block included!

The Faxon 14.5″ 556 NATO Gunner Barrel w/ Pinned Gas Block is machined from 4150 Chrome Moly Vanadium (CMV) steel with a QPQ Nitride corrosion-resistant finish, and M4 feed ramp extension. 100% manufactured in-house from gun-barrel-quality bar-stock, Faxon puts their barrels through a battery of tests and individually checks each barrel for headspace using precision custom hardened gauges. The Faxon 14.5″ 556 NATO Gunner Barrel w/ Pinned Gas Block is configured with a Mid-Length gas system, a pinned gas block and Faxon’s iconic Gunner Profile.

This barrel includes a low-profile gas block, pre-drilled to match the gas block journal. If you want the additional peace of mind knowing your gas system won’t shift or loosen when fired, this is a great option for you. Every Faxon 14.5″ 556 NATO Gunner Barrel w/ Pinned Gas Block comes with a pre-notched journal, individually mated to the included low-profile gas block.

Just what is the Gunner profile?

The Gunner profile is a blend of two of the best performing profiles of all time! From extension to journal, the Gunner profile features the Government profile’s well-known taper. Innovation then takes over and the Gunner transitions to a 0.625″ pre-notched gas block journal and pencil front end. Removing weight from the front of the barrel ensures maximum versatility and keeps material to the rear to maximize heat resistance and mitigate whip.

Product Information

Gas System


Muzzle Thread




Twist Rate



5.56 NATO

Part Type

Barrel, Upper Receiver Parts

Barrel Length



4150 Chrome Moly Vanadium

Barrel Finish

QPQ Nitride


Gunner, Pinned Gas Block

Gas Block Diameter


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