HOLOSUN HS406A Tube Red Dot Sight with 30mm Cantilever Weaver Mount

Designed for day use, including dusk and dawn. Reflex collimator sight - red dot sight. New advantage technology LED allows 50,000 hours of operation on one battery. 2 MOA on dot size. Reduced training time and ammunition. Unlimited field of view. Parallax-free with unlimited eye relief. Unaffected by extreme weather conditions. Durable and reliable construction. No hazardous materials used. No laser emission that could be harmful to your eyes. Press button brightness setting. Increased aiming confidence. Multi-layer coating for all lens. Magnification: 1X Battery: CR2032 Auto Shutoff - 8 Hours. After 8 hours, sight will automatically turn off. Housing Finish: PEO/MAO housing finish: Plasma electrolytic oxidation (PEO), also known as micro arc oxidation (MAO), is an electrochemical surface treatment process for generating oxide coatings on metals. It is similar to anodizing, but it employs higher potentials, so that discharges occur and the resulting plasma modifies the structure of the oxide layer. This process can be used to grow thick (tens or hundreds of micrometers), largely crystalline, oxide coatings on metals such as aluminum, magnesium and titanium. Because they can present high hardness and a continuous barrier, these coatings can offer protection against wear, corrosion or heat as well as electrical insulation.