I came over from the UK with some air guns, one was in a rifle case which they made me check in at the over sized baggage desk, all they seemed concerned about was that it was not a fire arm and had no live rounds inside the case. I had no problems with customs inside the USA they just wanted me to pay sales tax on it because I purchased it in the UK. I had another gun I brought through Canada, the stock was removed and it was packed inside my suitcase, nobody paid any attention to it at all. Maybe things are different since 9/11 but nobody paid much attention to them at all, either in the UK, Canada or the USA, good luck with transporting yours, all the best, Neil.