When American Tom Heberlein tried to import his firearms to Sweden, he got as far as his transfer in the U.K. before it started to become complicated. There, despite having the correct paperwork, a U.K. customs official said: "You can't have these guns." And thus began Mr. Heberlein's global gun education. Although Mr. Heberlein did, after a lot of negotiation, finally get his guns through U.K. customs and in to Sweden, the entire experience created a hassle he hadn't... (GunPolicy.org)