Faxon Firearms Duty Series 16 Inch 350 Legend Carbine Gas 4150 Nitride AR-15 Barrel

Faxon Firearms .350 Legend 16" Gunner Profile AR-15 Barrel. Machined from 4150 Mil-Spec steel and finished inside and out with salt-bath nitride, this 16" .350 Legend barrel is button-rifled and designed for the AR-15 rifle platform. It features a 1:16 twist rate, carbine-length gas system, 1/2" × 28 TPI muzzle threading, M4 barrel extension, and an 11° target crown. The Gunner profile blends Government and Pencil characteristics to shift balance rearward for improved handling and reduced shooter fatigue.

Key Features

• Barrel Material: 4150 CMV (Mil-Spec)
• Barrel Type: Button Rifled
• Caliber: .350 Legend (SAAMI)
• Twist Rate: 1:16
• Length: 16"
• Profile: Gunner (rearward balance for reduced fatigue)
• Gas System: Carbine-length
• Inside Finish: Nitride
• Outside Finish: Nitride
• Muzzle Thread: 1/2" × 28 TPI
• Gas Block Diameter (journal): .750"
• Gas Block Journal Length: 1.9"
• Barrel Extension: M4
• Weight: 1.36 lbs
• Inspection: Magnetic Particle Inspected
• Muzzle: 11° target crown
• Manufacturer: Faxon Firearms

About Faxon Barrels

Manufactured 100% in-house, Faxon barrels are fully stress relieved, air-gauge tested, and individually headspace-checked with precision hardened gauges to ensure consistent accuracy and quality.