Re: Easier to get guns in some states then Scotch.
It is, indeed, all nuts. I don't make the rules, I just work within them.
I've never had to do anything with ITAR. I am not manufacturing firearms for sale or distribution and as I understand it, I am not required to be a licensed manufacturer, so no ITAR.
Note that the only thing the feds care about is the receiver. And in my case, it seems they don't even care about that. I did register the receivers I made with the feds; they seemed surprised that I bothered, given the circumstances. As always when it comes to such things, consult a local attorney familiar with the rules in your neck of the woods before starting the manufacturing process.
I don't make guns anymore. It was a "can I do it?" phase I went through. The only pieces I still use regularly are one based on a Winchester 1894 carbine in .357 Herritt (a varminter, coyote mostly), and a 10 gauge flintlock that I use for duck and turkey on the rare occasion that I hunt. This last one is a replica of the one made by my Great-Great-Grandfather.