avoid the northeastern US.
The deal with the 30 round mags is not true-at least as far as the State of Ohio goes. There are some towns that say you can't use them.Not!
I'm in Ohio. Ar's are cool as long as you don't use more than 30 round mags. You can't travel with loaded magazines. You have to load those magazines at the range. Also No sherriff will sighn off on a class3 permit or SBR.
Ohio has fallen. Its part of the USSA now. I haven't been able to fly an American or State flag in Ohio for years.