Well, nothing we can say but get this tactical light at Airsoft Extreme... "The Evo2 Weapon Light is the latest generation of a line of innovative weapon lights from Rico Tactics.  It is highly improved over their most recent generation of their highly popular and economically priced Rico Tactics Alpha 9 Weapon Light.  It is considerably lighter, more compact, more ergonomic, and just as powerful and functional as the original Alpha 9. Click image for more information and to order one today."