Not to be disrespectful to anyone but most pics I have seen of mil surp bbls show a lotta rust on the outside and they may not have been stored in less than optimum conditions. I'd hate to order one and find the bore to be a rust bucket. I'd still be out shipping both ways and not have a suitable bbl with which to work with. IMA was supposed to have some of these 40mm bofors bbls some time ago. Will check with them and sarco. Thanks for the response's. If anyone has a source please let me know. Thanks Frank