I know what an AR-15 is. But you can't tell me that weapons such as a Bushmaster ACR or AK-47, isn't an assault rifle "because it's not military issue"? And how can they be hard to obtain when you can buy them directly from the manufacturer through approved gun stores after filling out the right paperwork? And that's for full auto assault rifles also. And that's before we get to informal trades with no papers or background checks or anything at all?
Difference being, there are more guns in the US than there are cars that can do 200 mph.
Uhm... A car needs to go 200 for you to consider it fast? You must race for a living. There are less cars and more negative car statistics compared to gun stats. Once again it sounds like you want to put a limit on what you deem acceptable such as the amount of guns we can have. Again,this is not to each according to his needs. This is to each according to what he feels like pursuing even if it's a thousand of something.