Took rifles a few years ago, all straightforward and you get a visitor pass that lasts for a year. Tempting you to stay!! Just be aware as we had problems flying back out via Hong Kong. It was quite scary actually, we were in transit, and taken off the plane to an outside area where armed police with guns at the ready gave us a thorough questioning! There was a language barrier, they broke my friends rifle case, photographed, logged and measured everything, it was like they had never had anyone come through with guns before. It was Quite worrying at the time. I don't know what it's like going via LA.