The SRS is a red dot sight with a large, clear reticle. It is illuminated with the help of a solar cell which is installed above the reticle. However if the solar radiation should not be sufficient, the optics can also be illuminated with an AA battery. The red dot on the weapon is set using the two adjusting screws on the side and on the back. For installation, the SRS has a screw-on mount based on the 22 mm Picatinny rail.