Originally Posted by michael_aos
I'm a little fuzzy on the physics involved, but...

I'd like to replace the Hayes Research rear sight and retain the Hayes Research front sight.



Think about this for a second. The front sight is in X plane, it's not adustable for elevation (meaning it can't go up and down)
You want a rear sight that goes up and down to match that front sight because your current sight is too low
But even if you get one, where is it going to end up?
That's right, way down low where the other one is.
so, your problem will still be the same.