Found this interesting…

Even though the media describe McCain as “opposed to gun control,” he was instrumental in passing the Lautenberg gun show amendment when he led four other Republican senators and all the Democrats in bringing up the mandatory gun show background check amendment, thus giving the Democrats the votes they needed to pass a more onerous gun control bill.

Rest of the article is pretty interesting

http://www.freerepublic.com/forum/a38b509126fca.htm