after i pay the tax whats the easiest way to sbr the mini
Have the receiver drilled and tapped for two screw holes and put an Ace side folder on it. That is the easiest way. There are other ways to make it look the way you want it to.
I was curious about that myself. I had been thinking about an SBR, now that I have the NFA bug and all. I was thinking about an AR, since that really seems the easiest. Just buy a receiver, get it engraved, then submit the paperwork (and wait an eternity). When you get it, build it out.
But for other gun types, AKs and what have you, who do you go to get the work done to convert them? Are there any good Class 2 manufacturers (since I'm assuming that's who would need to do the work) around?
You can do the work yourself. I kept my Draco as a pistol until the paperwork came in and then I (with the help of another member who had a drill press and some taps) drilled and tapped the back of it to attach the stock. As long as a stock can not be easily added to it (i.e. not just bolt on) you do not have intent to build an unregistered item.
And actually... to be fair, the other member did most of the work, and i helped him, but it is nothing that one can't do themselves with the right tools (which I did not have).