Howdy!
I recently custom fit an LCR fiber-optic front sight onto a 4" 15-3 (
details here). For the rear, I went with a .160 blade. I tried to sight it in tonight but there's not enough adjustment in the rear; with the sight bottomed out and the dot centered in the rear blade, I'm still hitting 3-4" high at 10 yards. To hit POA, I have to cut the dot in half with the bottom of the notch.
Am I right in thinking that I need a shorter blade to bring down the POI? Any guesses on what height to get?