I have a friend who likes guns. He has a small collection and one of his favorite things is to take them to the firing range for a few hours. He's very responsible with them and has an excellent background check. Yet, he can't own certain guns because of federal and state laws? Any criminal can go to the black market and get the guns he's not allowed to own, but the US government still thinks it's effective to outlaw a weapon to get it off the streets?

I can buy handheld lasers than can permanently blind people at 150 meters and cause skin damage and set thing on fire at even closer ranges legally without a background check. I can even buy one that can flash-blind pilots and drivers from several miles away.

Of course, it's illegal and irresponsible to aim even a laster pointer at planes and other vehicles, but so is shooting someone with a weapon. Why should guns be treated any differently from other dangerous objects? You can kill and/or injure people with a well-timed flash of a Class II laser (the typical laser pointer) just as easily as you can with a gun. Or you can never harm a single living thing with either, if you're a responsible owner.