Polytech M14 flash hider

[10x]

If you are not out of alignment now, you won't be after you cut the slots.

The alignment comes from the base of the opening in the muzzle break/flash hider butting up against the square face near the muzzle. The splines help keep things aligned, otherwise just eyeball it and you can tell. You can use shims on those faces to change the alignment. National match flash hiders are opened up a little to avoid the bullet contacting the hider.

Don't get the metal too hot when grinding.

The ATF did not allow import of some guns because of features. The muzzle break was one way to avoid a disqualifying feature.

[bryjcom]

Take it off and machine away. You don't need to send it to get aligned unless it doesn't align its self. I quick eyeball down the muzzle end and go shoot it a couple of times. If its hitting the hider than you will see copper marks on the inside of the flash hider.