Sig Sauer Romeo3XL 1X30mm Red Dot – The ROMEO3XL open reflex sight is the ideal sighting solution for MSR rifles, carbines, shotguns, submachine guns, and full-size handguns with the ROMEO3MAX/XL footprint or adapter plate. The ROMEO3XL features a high transmittance red notch reflector for excellent brightness, light transmittance, and zero distortion. 3 MOA and 6 MOA red dot options with multiple intensity settings ensure rapid target engagement under a full range of lighting conditions. The large 35mm lens offers an unparalleled field of view in an open reflex sight.