Faxon Firearms 5.56 4150 Pencil

Faxon Firearms 5.56 4150 Pencil barrels are the lightest in the industry. Don’t take just our word for it, major companies like Robar, 2A Armament, and others choose Faxon pencils for their ideal balance of weight and performance.

• Barrel Material: 4150 Certified Gun Barrel Quality Steel
• Barrel Type: Button Rifled
• Barrel Caliber: 5.56
• Barrel Twist: 1:8
• Barrel Profile:  Pencil
• Inside Finish: QPQ Nitride
• Outside Finish: QPQ Nitride
• Muzzle Thread: 1/2-28 TPI (Threads Per Inch)
• Gas Block Diameter: .625″
• Gas Block Journal Length: 1.1″
• Barrel Extension: M4
• Magnetic Particle Inspected!
• 11-degree Target Crown