The federal ban on assault weapons expired in 2004. For all I know, no federal law prohibits American citizens from buying and owning these type of weapons. The number of states that have some sort of "assault weapon" ban in place can be counted on one hand, so it is wrong to say "most states". More so, "automatic weapons" are not the subject of the ban, the term used is "assault weapons" and that means semi-automatics and fully automatics with large magazine capacity that are built for easy handling (front mounted handles, folding stocks, weapons made ready to accept attachments etc).
It is fair to say that most EUROPEAN countries are so restrictive on firearms sales and ownership that it can effectively be described as them being banned, though it is a very broad stroke, which is why I opposed your previous post. In most of the world the gun represents freedom and safety, but to many if not perhaps most Europeans, monopoly on violence/power belongs to governments (police, military).
For clarity: I'm not defending gun ownership or excusing it, I have no interest in owning guns, but I am interested in debunking inaccurate claims and assumptions.