Although I can usually find anything I'm looking for from CGN sponsors, I ended up buying a collapsible-stock, threaded-barrel Ruger SR-22 rifle from Bashaw Sports about three weeks ago because they were the only dealer I could find that had the threaded barrel in stock. Great service and quick delivery, and at the time they had a few more left. You could also try Grouse River Outfitters - there's an SR-22 currently listed on their website, but if it's the same one they had at the end of October then I believe it's the model without the threaded barrel.
Cheers,
M
