I just recently learned about Armslist, guess I'm a bit behind the times. I'm considering selling the .40 ammo and the remaining M&P paraphernalia I have if I'm unsuccessful doing so at a show tomorrow. Can anyone provide guidance/experience/instruction as to how (or how not) to conduct transactions on there? Obviously, in dealing with anything firearm related security is an issue, as are legal issues, I want ot be sure I go about things in the right and safe way if/when I do so. Thanks.