I can't speak to u5a1a1, but you know, there is already a model in place for how we could regulate a dangerous tool. 

To own a car, you must certify that you are physically, emotionally, and psychologically capable of operating one. You must demonstrate through practical and theoretical evaluation that you know how to operate a vehicle safely, and that you are able to do so. If you aren't, you must either correct the situation (glasses or education for instance) or go without. Reevaluations on a regular basis to make sure that the driver hasn't lost the ability to operate a vehicle. Revocation of the right to drive if the operator demonstrates incompetence. If pressed, we could use this model for guns as well...but I have an even BETTER idea. 

Let's stop being such selfish pricks to each other. We can start with not cutting each other off in traffic or dissing each other over differences of political opinions, and then maybe the gun violence will solve itself. 

Nah...too much.