Kopel is a great guy. He took Gary Mauser (a progun scholar) and moi shooting in Boulder with his Springfield TRP.
Here's an earlier text - Gun Control and Gun Rights: A Reader and Guide by Andrew J. McClurg, David B. Kopel and Brannon Denning
It has rational pro and con reviews of firearms issues.
Also, a good read is:
Gunfight: The Battle over the Right to Bear Arms in America by Adam Winkler
Inside scoop on the Heller fight - some progun folks don't come out so good if you know the inner workings of the fight.
Winkler's book is clear that being a 'conservative' doesn't mean you are progun but we don't want to start this endless debate by folks who use the term as tribal identifiers without delving into the issues - which we don't want to do here.