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