Rainstorm One .22 breech o-ring size in #? I put in a #36 but not sure it's

[JimmyD.]

the exact perfect size. Hard to tell without calipers and old one was chewed up a bit from brush and getting out. What a PITA to get back in. I disassembled entire gun other than tube and valve. Barrel was frozen at first but unscrewed, then coupling. Brass breech seems to be threaded in but not sure how to get it out right. Want to debur, polish, and open transfer port slightly. Any help is appreciated. Jamesdingle18@yahoo.com

[Habanero69er]

I've blown a couple breech o-rings in my RS-I & yes, they are a real pain to get back in. I contacted Will Piatt & he was able to give me the size I needed. He also told be a little trick on how to get that darned o-ring back in place with a paper clip or in my case a dental pick. Will Piatt is the man when it comes to Korean rifles. Good luck.

https://sites.google.com/site/saddlemountaingunsmith/contact-us