Experience fast, responsive accuracy in diverse lighting conditions and backgrounds with the VortexA(R) CrossfireA(R) Green Dot Sight. Using the most visible color to the human eye and a reliable, uncomplicated design, it delivers impressive versatility on your carbine or shotgun. Backed by the VortexA(R) VIPA(R) Warranty. 2 night-vision compatible illumination settings Multi-height mount system consists of a lower 1/3 co-witness mount and low mount Anti-reflective coatings on all air-to-glass surfaces provide increased light transmission for greater clarity and low-light performance Nitrogen purged and O-ring sealed for fogproof and waterproof performance Waterproof, fogproof, shockproof Parallax free Order today!