It's not ridiculous, because that's how the argument needs to be framed. The world does not have a "gun violence" problem, or a "Ryder truck violence" problem. It has a violence problem. Madmen commit violence. That's where we need to focus our efforts and our arguments. Madmen have used fertilizer, airplanes, fire, gas chambers, trucks, pressure cookers, bombs, guns, knives, hammers, and rope. The chosen method is irrelevant. Guns have taken on this bigger than life persona when they are simply tools. AR-15s are ideally suited for plenty of non-murderous tasks, just like rope is good for a lot more than lynching. If the locomotive of society decides that guns are bad, there's no stopping the degradation of our rights. But we'll simply find that when you peel away the "tool" layer, you're still left with a core of violence. The Brits are learning this now as they move to rearm their police.
So as to the better idea, let's start with the family. How can we reinforce the family so it can serve as a training ground for acceptable behavior?