Tis not over yet. Federal law prohibits introducing an automatic knife into interstate commerce without certain qualifications. So I can possess one in Tennessee, but until dealers start carrying them, I can't buy one and have it shipped.
Think of it this way, I am closer to Canada than I am Memphis. Just think of how many states, area-wise, you get to carry if you ever come & visit. I'm a turn that frown upside-down kinda guy.
Can't carry them across state lines, either. Can't even ship between two states that allow possession. Fed locked this one down hard in the 50s.