I am a new member & this is my first post. I have a .22 KKJ (mint) but without manual and I have been unable to find a source for scope rings & or mounts. I intend to put a Leopold 2 X 7 on it but am unsure if the grooved receiver is 11 mm /13 mm / or some other measurement. Also, I want to leave the barrel mounted iron sights on the rifle so I am unsure what height the rings must be. Is there anyone who can offer me suggestions or sources of information? Thank you in advance for your time.