interesting link:
http://www.conservapedia.com/Gun_control

yes, this site does present the conservative point of view on the topic. But let's not presume that everything we don't like is also untrue.

Regarding the observation that the choice of person A (not having a gun) does not endanger anyone, click on the link and scroll down to the section titled GUN CONTROL AND GENOCIDE

This is an abbreviated list. I have seen other sites where there are far more historic examples of genocide after gun control was passed. So I am not sure I would agree that gun control is safer for the general population. It just determines who has guns and who is defenseless.

In a country that is becoming more divided all the time, I really do not want laws that enable a government of either persuasion to come in the middle of the night and eliminate those they consider to be dissenters.