Lightweight and ultra-compact, the Vortex SPARC II Red Dot Sight can be conveniently mounted on rifles or shotguns. Its 2 MOA, daylight bright reticle offers 10 brightness settings along with two settings for night-vision. This sight is designed with a multi-height mount system providing four separate mounting heights to suit most firearms with picatinny or weaver bases. Constructed from aircraft grade aluminum, this rugged one-piece body is o-ring sealed to ensure a complete waterproof and fog-proof performance.