New Crimson Trace Rail Master Pro Sight Green CMR-204. Brand new, never opened the box. CMR-204 Rail Master Pro. Instinctive Activation(Tap-on, Tap-off). 5 Minute Auto Shut Off. Green Laser + 100 lumen LED White Light. Material: Polymer and Aluminum. Modes: Laser + Light, Laser only, Light Only. Laser + Light Strobe. Battery Life: 2 Hours. Fits most pistols, rifles, and shotguns with M1913. Picatinny or Weaver accessory rails.