You can try the language above but the problem is the policy of the mail service in England. Royal Mail and its various divisions will no longer ship guns and gun parts from England to the US. Air freight is used by most importers. If you know someone who brings guns in like Charles at British Sporting Arms, you may want to consult on a recommendation that won't break the bank. While the shop in England can try mailing the barrels, there is a better than even chance that the postal service there will not accept the package at the point it would leave England.