Well finally got some Trijicon HD sights and got a chance to try them out. First few rounds were really low. I don't wear prescription glasses while shooting but it seems like the POI is lower than the POA. Could be me since I can't focus that well at arms length without my glasses. Was also POI was slightly right about 1inch, gripping to tight maybe. Yet at 20-30ft all shots were on the silhouette and groupings weren't to bad. The lighting at the range was not so good either so couldn't quite see the dots. I do like them better than the originals and believe they will work for intended purpose. Also shot at around 60-70ft last couple of mag loads and was still on target. Now to work more on grip.