Gun Policy & the Second Amendment. It was the subject of a debate held at Harvard Law School & featured Eugene Volokh, Alan Dershowitz, & Dennis Henigan of the Brady Center.
While making the blog rounds I found this post at the Volokh Conspiracy which links to the debate in its entirety. It's just under two hours long but worth the investment in time.
For your conveinience you may access the site with the Realplayer link to the debate in question here.