I would highly recommend going over to the forums at kammeret.no and posting a message on their equipment discussion (everything is mostly in Norwegian, but they all know English). The Sauer 200 STR is the sport version of the SSG 3000 and is an extremely popular rifle in Norway. Plus, if you've seen the type of competitive shooting they do, you'll see that they go through barrels like hot cakes. So, as you might expect there are plenty of guys who can help you out finding parts for a conversion, or even sell them to you. I was able to find plenty of spare parts for my 200 STR and got a lot of advice on what sorts of things guys are able to do with their rifles.