Faxon Firearms 15A57C125NMP-CL Duty Series 5.56 NATO 12.50″ Black Chrome Mag Phosphate 4150 CMV Barrel

Description

The FAXON FIREARMS Duty Series 5.56 NATO is a rifle barrel in 5.56, 12.50" long.

The rifling twist is 1:7 – one full turn of the bullet in 7 inches of barrel. Twist rate decides which bullet weights a barrel can stabilise: a faster twist (a smaller number) handles longer, heavier bullets, a slower one suits lighter ones. It is cut into the barrel and cannot be changed.

It is chambered in 5.56. Chamber and bore have to match the ammunition exactly – a barrel is not adaptable to another cartridge.

Fitting a barrel is gunsmithing on most actions: headspace has to be checked with gauges after installation. An AR-pattern barrel is the usual exception, being a drop-in against a correct bolt.

This is a part or accessory, not a firearm, and ships directly to your address.