This CenterPoint red/green reflex sight has a built-in Weaver style mounting system for easy mounting on any Weaver/Picatinny rail equipped gun. Sight in targets quickly & efficiently with this reflex sight, includes flip-open lens caps & battery. Enclosed red/green reflex sight 30mm objective Phase coated optics Built-in Weaver style mounting system Incl. CR2023 battery & flip-open lens caps