The Walther PS 22 red dot sight projects a red aiming dot onto the lens. Iron sights such as rear and front sights are not required, thus allowing you to aim with both eyes open. The PS 22 includes a mounting base which fits Weaver rails. The on/off rotary switch is also the brightness adjustment composed of 11 settings. The PS 22 is equipped with both elevation and windage adjustments and attached dust protection caps and comes with an allen key.