The RFX25 is a universal reflex sight ideal for both long guns and optic-ready pistols. The optic features a larger window to ensure a more forgiving eyebox allowing for a clear sight picture when shooting at irregular angles around barricades or cover. Viridian's signature green dot emitter ensures fast target acquisition. This optic accepts CR2032 batteries and has a runtime of approximately 30,000 hours. It is compatible with Docter-type optic footprints. included is a Picatinny adapter mount for use with 1913 Picatinny optic rails on pistols and long guns.