Ok, now i understand what you are asking. I thought you were asking about someone turning an unregistered gun into a dewatt to register it. You are saying taking an already registered live gun and dewatting it. That i do not know about, but thats a pretty pricey thing to do. I would think you would be better off with one of D. richardsons replicas for about a quarter of the cost. It would be a shame to weld up a funtioning gun. I guess you will have to check with the atf on that one to see if it is still legal to do. Sorry for the misunderstanding. I was just trying to help. A lot of people bought the dewatt guns sold after the world wars back in the 30's and 40's and never bothered to register them when the time came that they had to, now they are just good for parts and can never be reactivated. These are the guns i was referring to. Roland