Now before I get flamed for this, I am merely posting it because it came up under a search for a local gun shop. I opened it up and found the results interesting. Also, sorry for the repost if necessary. Also, I am not posting to show support of Brady by any means
http://www.bradycampaign.org/xshare/pdf/research/AGS-delears.pdf
http://www.bradycampaign.org/xshare/pdf/research/AGS-delears.pdf