Faxon Firearms 5.56 NATO 12.5in Duty Series Barrel

The Faxon Firearms Duty Series 12.5″ barrel is a compact AR-platform barrel chambered for 5.56x45mm (.223 Remington). It is built for short-barrel carbine applications where balance, durability, and maneuverability matter. The barrel uses button rifling and is constructed from 4150 CMV per the provided product data. Threaded at the muzzle, it accepts common muzzle devices and suppressor-capable fittings.

Key Specifications

• The barrel is chambered in 5.56x45mm (.223 Remington).
• The barrel measures 12.5 inches overall length.
• Constructed from 4150 CMV (as listed in the product name).
• The barrel uses button rifling (Button Rifled).
• The barrel is threaded at the muzzle for attachment of muzzle devices.
• The profile features a medium taper for a balance of weight and stiffness.
• The barrel is not fluted according to the provided specifications.
• The barrel is supplied without fixed sights per the product data.

This compact 12.5″ Faxon Duty Series barrel is intended for builders and shooters assembling short-barrel AR-platform carbines that require a durable 4150 CMV blank with button rifling and a medium taper profile. Its threaded muzzle and compact length make it well-suited for carbine builds where handling and accessory compatibility are priorities.