Good luck. I'm reasonably sure that it would do no good to contact Ruger. I have one of these rifles, but I didn't convert it to 209, mine still uses the #11 caps. I would think you could have a gunsmith that is familar with using a lathe, make you one. Shouldn't be hard to do or expensive. From what I've read, these rifles didn't work well when they were converted to 209 primers.