Here is an article written about AR-15's.  It also includes some videos made here in our store.

http://thetruthaboutguns.com/2010/04/don-gammill-jr/how-i-learned-to-stop-worrying-and-love-the-ar-15-part-ii/

Check out this video and then call us with your credit card.

http://www.lwrci.com/t-reprotb.aspx