Other than getting rid of the brightness reduction in some specific circumstances, I don’t know how one would make a much better pistol optic than the coa, I absolutely love my 19 coa. Rcr is cool because it fits Rmr fotprints, but it has to be incredibly bulky to do so and it seems like the Rmr footprint is fading out due to mounting inconveniences and the issues direct Rmr mounting can have on Glocks. I know comparing trijicon to holosun is heresy to some, but if all else is equal, I’d go with an eps over an rcr any day, especially since the coa is basically unobtainium now.