I agree with Guthwyn on this.

You can imagine a society with just steak knives all you want when you have your gun control but just think of all the guns out there already circulating in the United States. Please, if you really want to limit guns then you'd have to go out and obtain millions upon millions of weapons which I think is simply not possible. It's nice to think in the clouds but it is much harder to apply cloud thinking to reality.