I've built a semi-auto Uzi that I am considering SBR'ing. One of the places I'd consider shooting it is out of state at an action pistol match. Normal procedure would be to file ATF Form 5320.20 for the whole year. Unfortunately the state is RI which doesn't allow SBR's. Can I bring a registered SBR in an non-SBR configuration into a non-SBR State? From my research this appears to be a gray area. I'd hate to jump through the hoops, wait for 6 months, spend the money and be stuck.