Tushnet v. Cornell On Guns:

Oxford University Press has just published A Well-Regulated Militia: The Founding Fathers and the Origins of Gun Control in America by Ohio State professor Saul Cornell. The book challenges both the "individual right" and "collective right" interpretations of the Second Amendment, and puts forth a third "citizen-oriented" interpretation of the right to bear arms.

To help promote the book, the OUP blog is hosting a dialogue between Cornell and Mark Tushnet on the meaning of the Second Amendment. It's quite interesting so far. The dialogue begins here, and continues here and here.