CZ Scorpion irons, what distances for the apertures?

[AZCZguy]

Does anyone know what distances the 4 different rear apertures are meant for on the stock CZ irons for the Scorpion? And which one and what distance should be used to zero the sights?  There is nothing in the manual and I have searched high and low on the internet and can't find anything at least in English. I wonder if there is a Czech military manual for the SMG version that might have this information?

[Trooper894]

To my understanding, the center of all the apertures are on exactly the same plane. Elevation for whatever distance you wish is set with the front sight and the windage is set with the rear. The zero distance is determine by you and your intended use and the ammo you will be using. The different apertures on the rear sight are just personal choice for your individual eyesight. The Largest aperture allows the most light in and the largest field of view, while the smallest aperture will normally allow the greatest precision. 

[AZCZguy]

Thanks for the info, makes sense.