You realize that full auto AK's are already extremely restricted I hope. In all likelyhood, if this was an AK style it was semi-auto. I'm sure you can't come up with a good reason to ban those.
I'm undecided on all semi-auto's, because I don't know enough, and get the idea that the term is for a broad category, with a wide range of differences within that class. Something that is easily upgradeable to automatic might be of concern. It just depends.