Thank all of you at Glock Talk for all of the views, replies, and orders. I am now working with two trainers, and getting their personal feedback. I have a new video uploaded at [ame="http://www.youtube.com/watch?v=AhdJEX55PYY"]Dry Fire Mag Demo and Explanation - YouTube[/ame] that answers many of your questions and gives you an upclose and detailed demo of how the Dryfiremag interacts in your Glock to give you a realistic dry fire practice. Remember, there is a money back, satisfation guarentee on each Dryfiremag. Nothing ventured, nothing gained. Please go to the web site ( www.dryfiremag.com ) for complete details. Thanks again for all the interest and support.