Originally Posted by
georgeib
Genuinely trying to be helpful here, okie. But I seem to remember a thread from a few months ago where you might have said something about having difficulty with pistol RDS and, IIRC, you were given a bunch of crap about it. I may be misremembering here, so please bear with me. If so, I think you may be giving up a lot more than you think by going with an absolute co-witness, versus something like a lower 1/4th. The purpose of a red dot sight, ANY red dot sight, is to give you the ability to target focus while superimposing the dot on your POA.
Irons work differently, as I know you're well aware, no doubt. So by co-witnessing them in such a small window, you're giving up a significant part of the advantage of a red dot. Because you've essentially converted your RMR into a daylight bright night sight that just brings you back to front sight focus. FWIW.