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. 

10.5" Gunner Big Bore Profile AR15 Barrel, 458 Socom, Nitrided

• - Barrel Material: 4150 CMV
• - Barrel Type: Button Rifled 
• - Barrel Caliber: 458 Socom
• - Barrel Twist: 1:14
• - Barrel Length: 10.5"
• - Barrel Profile: Gunner Big Bore
• - Barrel Gas System: Pistol
• - Inside Finish: Nitride
• - Outside Finish: Nitride
• - Muzzle Thread: 11/16x24 
• - Gas Block Diameter: .875
• - Gas Block Journal Length: 1.1"
• - Weight: 1.50 lbs.
• - Magnetic Particle Inspected
• - 11-degree Target Crown

16" Gunner Big Bore Profile AR15 Barrel, 450 Bushmaster, Nitrided

• - Barrel Material: 4150
• - Barrel Type: Button Rifled 
• - Barrel Caliber: 450 Bushmaster
• - Barrel Twist: 1:16
• - Barrel Length: 16"
• - Barrel Profile: Gunner Big Bore
• - Barrel Gas System: Carbine
• - Inside Finish: Salt Bath Nitride
• - Outside Finish: Salt Bath Nitride
• - Muzzle Thread: 11/16x24 
• - Gas Block Diameter: .875
• - Gas Block Journal Length: 1.1"
• - Weight: 1.72 lbs.
• - Magnetic Particle Inspected
• - 11-degree Target Crown

16" Gunner Big Bore Profile AR15 Barrel, 458 Socom, Nitrided

• - Barrel Material: 4150
• - Barrel Type: Button Rifled 
• - Barrel Caliber: 458 SOCOM
• - Barrel Twist: 1:14
• - Barrel Length: 16"
• - Barrel Profile: Gunner Big Bore
• - Barrel Gas System: Carbine
• - Inside Finish: Salt Bath Nitride
• - Outside Finish: Salt Bath Nitride
• - Muzzle Thread: 11/16x24 
• - Gas Block Diameter: .875
• - Gas Block Journal Length: 1.1"
• - Weight: 1.72 lbs.
• - Magnetic Particle Inspected
• - 11-degree Target Crown