The open reflex ROMEO3 sight is definitely the right sighting solution for MSR rifles, shotguns, carbines, submachine guns, and full size handguns. Our proprietary red-notch coating ensures a bright red dot. ROMEO3 is highest for those moments while you barely have time to blink. The readily to be had CR2032 battery is side-loading, taking into account quick battery replacement with no need to take away the sight from the firearm. Extremely strong and lightweight aircraft grade CNC Aluminum housing ensures an entire life of reliable service. Dependable water-resistant (IPX-7 rated for complete water immersion as much as 1 meter) and fog-proof performance. Includes M1913 Picatinny low-rise mount and iron sight co-witness.