Something else to add: The best way of converting an anti is not directly address the issue of RKBA but is to identify and restructure their core belief system.
If someone has a very strong ideological belief in personal responsibility, you can easily make the case for RKBA; all you have to do is tie in that issue in a manner consistent with their other beliefs. If someone is a cafeteria libertarian (pick and choose where they support freedom) you can emphasize the idea of rights when it's in agreement with what they believe.
Not that I want to turn this into an abortion debate, but I know an anti that is as hardcore an abortion advocate as you'll ever find, when the subject of abortion came up would say "I agree with you, why should anyone be able to tell you what to do with your own body? What you do with your body is of no concern to anyone else, they therefore have no right to tell you what to do because you're not infringing on their rights". I would hammer that point home, and she would readily adopt it because it supported her point, but I would would turn it against her when we discussed RKBA and she would have no defense.
"My owning a gun causes no harm to anyone, why should my right to it be restricted any more than your right to have an abortion?" To really put the iceing on the cake I had a female friend then claim that she owned guns as a means of asserting her feminist ideals, that she was not going to be cast in th role of the damsel in distress waiting for the male in shining armor to save her from a rapist and murderer. After my female friend lent her a copy of Paxton Quigley's book (which was mine, BTW
, shhhhhh) that was all she wrote, she soon became a hardened feminist RKBAer.
A point which is worthy of mention is that my target in that case was/is a school teacher. It would be foolish to assume that teachers do not color their classroom message with their political views, andthe more people you can convert that have a dispoportionate amount of influence the better off you'll be. We do not have an unlimited amount of resources, we must therefore be especially careful to use them as economically as possible. Going after people who are 1) convertable and people that 2) have a disporportionate amount of influence is key.
Imagine how valuable a pro-RKBA radio DJ would be? What about a priest or minister? What about a teacher? You don't have to convert a majority of the people out there to agreement with you in order to have RKBA reinstated, all you have to do is convert the active and influential minority and the mission will be accomplished.
What have you done for RKBA and freedom today?