I found this at work today. Looked like a Schlage IC core but not quite. The IC core looked to be just on odd size. Just looked a little too big so I investigated.
A little keeper screw under the lock shackle released the core.
Turns out it's not an IC core at all, just an regular old KIK cylinder.
Maybe I'm the only one that's never seen this but it's new to me.
Many lock makers are putting out padlocks that accept KIKs. I sure is nice to have padlocks that can be set to just about any key, as long as you have the core