Features Broad Band multi-coated anti-reflective coated lenses; Trijicon fiber optics automatically adjusts brightness and contrast; Tritium phosphor lamp; dual illumination reticle. Large eye volume for quicker target acquisition. Military grade aluminum alloy housing. Totally battery free. Waterproof and dry nitrogen filled to eliminate fogging. Comes with TA51 mount. Black finish. Made in the U.S.A.