So i have the marstar military muzzle brake I just got in the mail today for my cz 858. When installing it I find that the only way I can screw it in tight is if the little pin thingy is not in the groove. Otherwise its not threaded all the way (maybe like 95%). So is it supposed to be not tight all the way or am I a dumb ass who doesn't know how to put on a muzzle brake? Any help is appreciated.





























all is still well.....





















