Only reasons I can see for banning the AK:
- It's world renowned as the resistance rifle, and amongst the general public conjures up scenes of terrorism and death
- No one produces an AK variant that is semi-auto only and can not take parts required to make it full-auto (feel free to correct me on this, as I have no idea whether its true or not)
Saiga makes semi-auto hunting rifles, that's how they get into the states. They look more like our Valmets when they go into the states and then them Yanks put the right furniture on em. They have a ban on importing military firearms.