I've been thinking about designing a ZK-9 "K" style weapon I'll call the "INFIDEL", with some of my leftover parts.
I dug out my ZK-9 http://www.youtube.com/watch?v=6GmD0EVPnug
I designed around a Russian Vityaz http://www.youtube.com/watch?v=7sPAPOhHKVk
This would be kinda what the "K" model would look like. I think it's really cool looking.