I recently acquired a Pentax ME Super which I'm having a good deal of fun with. A co-worker of mine mentioned that she has some Ricoh lenses that seem to be R-K mount which she's looking to part with. I haven't seen the lenses yet, and it's been a long time since she's used them so she can't remember exactly which ones they are, but it's definitely something I'm interested in.

I can't seem to figure out the compatibility of those lenses with the original K mount like on my ME Super. All I've been able to turn up is that there are some compatibility issues with R-K mount lenses and other Pentax mounts which can cause all sorts of horrible things like the lenses getting permanently jammed on the body, which makes me very hesitant to just bring my camera over and try them out.

Anyone have experience with this? Can I use an R-K mount lens on a K-mount camera like my ME Super (obviously in manual focus and in manual and/or aperture priority mode)? Are there any caveats I should look out for?