The problem with some red dots is the dot is bigger than the target, and if you want a smaller dot you run the risk of the red dot getting washed out in bright sunlight, the dot is just to small. If you're like me with a astigmatism in my right eye, it affects the way light refracts in my eyeball, so I don't see a crisp dot, I see like a draggon with a big tail. I can't use a red dot.