XS Sight Systems - Sights
These look pretty cool
I have had no problems with dust cover aperture sights holding zero.
That is how I made my first AKM aperature sight.
“The rifle itself has no moral stature, since it has no will of its own. Naturally, it may be used by evil men for evil purposes, but there are more good men than evil, and while the latter cannot be persuaded to the path of righteousness by propaganda, they can certainly be corrected by good men with rifles.”
― Jeff Cooper
Yes, dust cover mounts are not for heavy optics. One of the small red dots like a Burris Fastfire might work but have not tried one myself.