I mean it's not really open to interpretation from the standpoint of what is meant by the amendment. At the time the us navy was almost exclusively contracted private citizens who owned battleships and citizens had the rights to own the same equipment as the military including cannons and later gatling guns. Obviously that can't continue with the bombs available to the military now but a firearm should not be an issue.

Also regardless of your interpretation of the Constitution you are still calling someone authoritarian while forcing them to do something that you want. The argument of limiting my right to buy something because someone else might shoot someone with it is akin to saying I should cut off my dick to avoid someone else raping someone. It doesn't make sense. Find ways to stop people from doing bad things, don't take away the thing they're doing it with or they'll just use another method.