Complete barrel assembly for use with MCR® rifles and upper receiver assemblies. Includes barrel extension with fixed headspace, gas block assembly, 4 position regulator, piston, flash hider and dovetail cover. 100% Made In USA.

> 5.56 NATO chamber

> Length: 12.5"

> Heavy Profile for Sustained Fire Use

> Thread Pitch: 1/2-28" TPI

> Twist: 1:7 RHT

> Mid-Length Gas System

> 4 Position Adjustable Regulator

> Mag Phosphate Finish

> Works with MCR and Shrike 5.56 rifles and upper receiver assemblies.

> Made In USA