I tried the red dot/green dot, and the NcStar 4x AK scope, and settled on a Sightmark Sure Shot for my .45 carbine.
Great fun to shoot and every bit as accurate as I can be. They're short-range pieces (100 yards or less) and do very well with...I don't know what to call them..."close quarters" sights?
After I adjusted the sight and got the proper reticle and brightness level for my tired old eyes, it makes one big ragged hole at 25 yards.