Gun Control & RKBA

IIRC, every state had some licensing scheme and some states had registration. You don't have to be attacked with a gun to be able to use it in self defense. In the US disparity of force is a reason. An example is multiple attackers or smaller person, weaker person defending against larger or healthier attacker, something like grandma in a walker vs a 20 something meth head (extreme examples, you get the picture).
BTW, the AFP has on idea how many illegal guns there are, and you do know about the biker gangs making their own machine guns, right?
I read about a scandal in Queensland that some of the guns turned in were sold on the black market by some of the cops.

While you haven't had mass shootings, you have had many mass murders by other means. Does that matter? IIRC, New Zealand had the same rash during the same time frame, but did nothing and had the same results. My question is, isn't it really a matter of post hoc ergo propter hoc?