Laser guns are fine for shooting down missiles, but on the ground? This isn't Star Wars; lasers don't stop after a short distance, and you evidently are ignorant of the maxim to know your target and what is behind it.
You also don't understand the first thing about self-defense, as evidenced by "legitimate hunter". The Second Amendment is all about self-defense, not sport, not hunting, and that self-defense includes not just bears and wolves, but also criminals and governments.
You seem completely ignorant about the changes 3D printers are making. Pretty soon, it will be utterly irrelevant what governments want to do about guns; anyone will be able to make guns and ammo from raw materials which are used for vacuum cleaners, pots and pans, cars, houses, and everything else people want. Government will only be able to confiscate guns when they are used, and considering how many criminals, even in hoplophobe-friendly places like Britain, Japan, Russia, and elsewhere, have access to guns, this prohibition won;t be very effective either.
Which brings up the last ignorance -- history. History shows that prohibitions don't work. Prisoners make knives. Alcohol prohibition didn't work 90 years ago and doesn't work now. Drug prohibition has never worked. Some 25% of California drivers don't have insurance. All prohibition does is turn everybody into a criminal, which decreases respect for law.