Fits perfectly on the Walther PDP, lower ⅓ cowitness with standard irons. Zeroed very quickly and made shots out to 50m extremely easy. Brightness adjustment works perfectly, tested in several situations from dark room to covered firing point looking out to the range, to open firing point aiming into a darkened backstop.

Absolutely perfect fit, zeroed in fairly quickly to the point where it can be fire quickly and accurately