Get a FFL. Get insurance. Get a lease. In the end these three things will protect everyone involved. If the one guy has several business then he will not only understand a professional relationship but understand how your both are better off with one. Run your new business as a business not as a hobby or toy. Fastest way to fail is to not treat it as a real business. Oh yeah, do not forget to pay your self. Fun is fun but you need to pay bills and no one is happier than a person who can easily pay his bills. Hope it works out well for you. We need all the decent gunsmiths we can find these days and one who is happy is a plus.
