The comprehensive assortment of Red Dots features many invaluable tools for the highly professional tactical field. Some of these models are so compact that they can be mounted on pistols, archery equipment, shotguns and traditional rifles as well. Among them, the KL7217 is uniquely versatile because it comes with a dual mounting system and with a special riser that allows for a much higher placement if needed.Features:DUAL ILLUMINATED DOT (RED - GREEN)RETICLE BRIGHTNESS SETTINGS: 0-8EYE RELIEF: UNLIMITEDDUAL MOUNTING SYSTEM: HIGH AND LOWSHOCKPROOF/NITROGEN FILLED/WATERPROOF/FOGPROOFSUITABLE FOR WEAVER/PICATINNY RAILSBATTERY LIFE: 200 HRSDIAMETER: 22MM - 0.86?LENGTH: 70MM - 2.75?WEIGHT: 140 GR - 4.9OZDOT SIZE: 3 M.O.A.