I found a wide variety of Lasers, CT down to NcStar. All price ranges from the top of the line to the bottom. Even LaserMax name come to mind. I am sure others will have more input. I know I bought two that can be clamped to my guns, "no rails". So you can go any cost factor and feature factor that suits you. Try a search here, for Lasers, then try Web search for Firearm Lasers, Gun Lasers, or even Pistol Lasers.