Well, you can try http://www.gunbanobama.com/
though of course that's a highly one-sided site (as if others aren't
.) I'd prefer the presentation to be a bit lower-key, but maybe that's just me.
The bottom like, though, is that while Obama has been clearly on the strongly anti-gun side his entire career, there isn't any specific plan that he's set forward in his presidential campaign as far as I can tell. Surely post-Heller, and until the composition of the Supreme Court changes again, there's not much he could do, and most definitely anything serious he tried to do via executive fiat would be swiftly struck down.
That's still no reason to vote for him, however: like so many other issues this time around, the choice is between one candidate who isn't all that good, and one who is positively dreadful.