I have a parts kit that I'm trying to turn into a sbr. I have the reciever and havent filed for a form 1 yet. The place that's going to do the build for me is in florida and they are a 07ffl / 02 sot. I inquired to them and they said to do the form1 first and then send them reciever and parts kit. How do I go about getting this done? Do I get the form1 then just mail it to them or do I have to contact anyone or ship it from my local ffl?