The Universal Rifle and Shotgun Laser System gives you the edge in any tactical or self-defense situation. Each system includes 2 sets of clamps, which allow the mounting of the Laser to any 1/2- to 1-inch barrel or magazine tube. The Laser comes with a curly cord remote switch, extendable from 10 to 36 inches. The Laser is only two inches long and with the mount weighs less than three ounces. Each Laser is easily adjusted for zero with both a windage and elevation screw.