With a mid-adjustment off position and eight discernible brightness settings, this brightness dial allows for quick and ergonomic adjustments. Hard-anodized, forged 7075-T6 housing is fully sealed and waterproof, providing durability in demanding conditions. 1 MRO Lower 1/3 Co-witness Mount. 1 MRO Mount Guide Distance From Top of Mounting Rail to Optical Axis : 1.663 in. (166g) with battery installed, with mount.5 years of continuous use at day setting 3 (setting 5 of 8) at 70°F (21°C). (66mm x 43mm x 73mm) with mount. The item "Trijicon 1x25mm MRO 2.0 MOA Red Dot Sight & High Mount Black MRO-C-2200006" is in sale since Friday, December 30, 2016. This item is in the category "Sporting Goods\Hunting\Scopes, Optics & Lasers\Red Dot & Laser Scopes". The seller is "opticsdepot" and is located in Birmingham, Alabama. This item can be shipped to United States.