I have purchased, at different times, antique barrels from London gunsmiths. They were shipped to me as 'iron pipes' with no problems. A former member here, Squire Robin, from England, once purchased a Chambers kit but had it shipped in several packages at different times labeled only as 'parts'. As others have suggested, the cost of shipping might exceed the value of the shotgun. There are many thousands of European made shotguns that were imported to the U.S. you might be better of searching for one of those. They are usually fairly inexpensive.