*Fully multi-coated red lenses enhance image clarity and increases light transmission during low light situations.*Illuminated reflex sights with 4 bright reticle selections provide various choices to meet different occasions.*Reticle sight with standard profile Picatinny mounting base installs conveniently on the rail, using included Allen wrenchesThis red dot reflex sight can co-witness with your front sights. Tubeless design with 40mm reflex lens aperture provides quick target acquisition.