300 BLK with pistol gas system for optimum reliability with super or subsonic ammo.
The Gunner profile is a blend of two of the best performing profiles of all time, Gov’t and Pencil.
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 our barrels from the start. We start 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.
Faxon manufactures all our barrels in Cincinnati, Ohio under our ISO:9001 and AS:9100  quality certifications.

Barrel Material: 416-R Stainless
Barrel Type: Button Rifled
Barrel Caliber: 300BLK AAC
Barrel Twist: 1:8RH
Barrel Length: 10.5″ or 16″
Barrel Profile: Gunner
Barrel Gas System: Pistol for 10.5″, Carbine for 16″
Inside Finish: QPQ Nitride
Outside Finish: QPQ Nitride
Muzzle Thread: 5/8″-24
Gas Block Diameter: .750″
Gas Hole Diameter: .075″
Gas Block Journal Length: 1.9″
Barrel Extension: M4
Weight: 1.10 lbs
Magnetic Particle Inspected!
11-degree Target Crown

Manufacturer Part Number: 15B38P10NGQ-5R-NP3 , 15B38C16NGQ-5R-NP3