These lights are awesome - Streamlight TLR-1 HL 1000 Lumens LED Tactical Weapon Light

They are well-designed and sturdily built. I have one each on my Ruger American pistol and my Mossberg 500 Cruiser. They have a whopping 800 lumens which, when I stand on my back doorstep at night, easily illuminates an area of the stream 150 yards away. I'm sure some people will find the battery hatch to be complicated, but that's a necessary feature designed to keep the batteries dry.