Just a suggestion... In the upper bar is a link to "Library" click
In lower right hand corner is "Other Misc Resources" click
Scroll down to "Papers" where you'll find "Social Science Research Network" click on it.
Oh heck click on the link (I did a search there using "gun + rights" and it came up with the following)
http://papers.ssrn.com/sol3/results....meout=50000000
I find it interesting that Kopel is the first up int he que. Search him out online (David Kopel) or the Independence Institute. He wrote a book a while back titled (IIRC) The Samaurai, Mounties, and Cowboys. Excellent research
Hope that heads you in some direction. Good luck on your quest and publishing