I love my Viper sight. I have a tip you guys may be interested in. I have the blue lite on mine, and kinda though it was way to bright, kinda blew the target out in low light conditions. So I basically took a black sharpie,and colored all but the middle of the bulb with the marker, and now it has a nice glow to it when the light gets low. Not to much, but enough to get the job done.