I'm flying on Thursday, and haven't yet bought a case for my handguns. Upon reading the regs, it appears that if I put a lock on the cases my guns came in (I'm going to be carrying a Taurus and a CZ) they will serve as legal cases according to the TSA regs. They're hard sided, can be locked, and aren't easily pryed apart on the side. That said, I don't want any problems. Has anyone else flown with the factory cases, and do you have any general advice for me concerning flying with guns.