I mean "the thing that gets you the most" is pretty much true for literally almost anything. You can go to a store and pick up an TIG welder or a chainsaw, or all kinds of other things no problem, no question, that arguably require much more in the way of practice and training than a firearm.

That said, I don't really get what you think licenses and such accomplish. A gun is 19th century tech that you make in a garage. Anybody who really wants one can make one, all the registration and licensing is mostly a burden on people who are mostly harmless. And it's very post-facto/pre-cog-ish.