http://volokh.com/2011/06/27/47830/#more-47830 A nice exposition on "the weapons effect" or "the trigger pulls the finger” and why the argument continues to be rejected by the courts, all the way up to SCOTUS' recent Brown v EMA http://www.scotusblog.com/case-files/cases/eanf/ .

Now if we could just get politicians on the same track.

stay safe.