The Holosun 407C X3 red dot sight features a precise 2 MOA dot reticle with RMR/SRO standard footprint compatibility for versatile mounting options.Holosun 407C X3 Red Dot Sight2 MOA dot reticle for precise target acquisitionRMR/SRO standard optic footprintCR2032 battery power sourceCompact dimensions: 2.44" length weighs 4.37 ozBlack matte finishOpen lens design for full-size pistol applicationsMount not includedDesigned for tactical and competitive shooting applications this red dot sight provides fast target acquisition and reliable performance for pistol platforms with RMR-compatible slides.