The Meprolight MicroRDS, the latest addition to the RDS and RDS PRO family, is a small, rugged, and energy-efficient electro-optical red dot sight, designed for both handguns and rifles. The MicroRDS serves as the main aiming sight for handguns or as a backup sight for rifles, offering fast target acquisition at close distances. The MicroRDS with its large display window and clearly defined red-dot ensures rapid target acquisition with both eyes open. The MicroRDS Quick Release Adaptor is designed to fit a great variety of handguns thanks to its patented, quick release mounting system. The backup TRU-DOT Night Sight has an integral rail for easy attachment. Features and Specifications: 1x Magnification Display Window Dimensions: 22.5 x 17.5 mm Red Dot Size: 3 MOA Power Supply: 1x CR2032 Horizontal and Vertical Zeroing Knobs Length 1.8" Width 1.3" Height 1" Weight 2.3 Ounces Interface: Dovetail (Backup Sight) Backup Sight Illumination: Tritium Backup Sight operation Time: 10 Years Matte Black Fits: Picatinny Rails