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: 0-8 EYE RELIEF: UNLIMITED DUAL MOUNTING SYSTEM: HIGH AND LOW SHOCKPROOF/NITROGEN FILLED/WATERPROOF/FOGPROOF SUITABLE FOR WEAVER/PICATINNY RAILS BATTERY LIFE: 200 HRS DIAMETER: 22MM - 0.86? LENGTH: 70MM - 2.75? WEIGHT: 140 GR - 4.9OZ DOT SIZE: 3 M.O.A.