I've just started making airstrippers and Im trialling a prototype with an adjustable cone on my steyr at the moment. I dont know the diameter of your barrel but probably in a month or so after some field trials I would be in a postion to make one.
have a look at my facebook page (link below) of the stripper I'm testing. the stripper is a stubby one since I have a long barrelled steyr and any longer I would need a bigger bag!!!
STEYR LG110 with Custom English Walnut stock
For hand-crafted custom airgun accessories including airstrippers, pellet sizers, grip sets and stocks click on my page below: