First of all, Im a new guy here, Im from Norway and just ordered my first rifle. I do have to admit, I have sneakpeeked a lot on your forum lately, admiring all the beautiful rifles and gear.
Anyway, being a poor student, I cant afford a proper scope yet but Id like to practice with the zkk diopter sight. That made me thinking, at what distance is the aperture sight sighted in for? As far as I can see, theres no way to regulate it? (2 screws on top is just for assembly?)
The ZKK apertures are adjustable for elevation at least(screw at the front of the aperture, on my rifle).
You sight it in for whatever range and load you need. You might have to replace the front sight with one that is the correct height depending on the load. I do not think there is a windage adjustment. The "U" notch rear sight can be drifted in it's dovetail for windage.
-------------------- Daryl
"a gun without hammers is like a Spaniel without ears" King George V