I have a Red Dot on a AR. But to be honest, the dot is to small(cranked all the way up) and I have a bit of Red/Green Color Blindness. In full Sunlight it is hard for me to see. I can get on target but I also want to see what I hit or missed.
The problem you had is what I experienced also, but it was a 4x scope so I figured it was the power. I suppose I can get a variable power but will end up spending more than the gun.