Each Pinned Gas Block Barrel comes with the pin, as well as a gas block. Gas blocks are hand-tightened to the barrel for shipping. Faxon Firearms barrels are the pinnacle of value. Manufactured 100% in-house from cradle-to-grave, these barrels are fully stress relieved, air-gauge tested, and 11 degree target crowned to ensure superior accuracy. Quality is imbued into these barrels from the start. Faxon starts with the best materials, either certified 4150 Mil-Spec steel or 416-R Stainless. From there, each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace by precision custom hardened gauges.

Specifications and Features:
Barrel Material: 4150 CMV
Barrel Type: Button Rifled
Barrel Caliber: 5.56×45 NATO
Barrel Twist: 1:8
Barrel Length: 16”
Barrel Profile: Pencil
Barrel Gas System: Mid
Inside Finish: Nitride
Outside Finish: Nitride
Muzzle Thread: 1/2-28
Gas Block Diameter: .625″
Gas Block Journal Length: 1.1″
Barrel Extension: M4
Weight: 1.20 lbs
Magnetic Particle Inspected
11-degree Target Crown