Oh man! I wish I had a K-15! I wanted one in 30-06 back when I was a poor college student, and I just could not afford it.
I believe that Cone-Trol makes mounts for the K-15, but I couldn't swear to it. They are in teh same podunk little town in Texas where the importer for Kleingunthers was.
www.conetrol.com.