It takes some getting used to, but once you do its pretty good. My grouping definitely improved once i got the sight adjusted. I'm only giving 4 stars for 2 issues.
1. You actually cant see thru the sight. Seems if they did a slight redesign of the forward block moving the windage adjustment out of the actual block would solve this.
2. Having worked with aluminum for many years, I was suprised the rear part, holding the glass does not have a radius on the corners. This causes that part to be sharp and dig in when conceal carry. I put a radius on mine and was fine after that.
I have several pistol sights and they all work well. The issue they all have is target acquisition in a timely manner. My SeeAll Open Sight is faster and more accurate than all of my other pistol sights. I have it on my glock 45 caliber and wish I could find a way to put this sight on my Berettas . I recommend tho SeeAll Open Sight because it’s priced well, it’s easy to install and completes the pistol sight acquisition issue.
Have not been to range yet
1. Installation was easy, followed Scottie Cox's excellent YouTube video.
2. The sight is mounted onto a dovetail adaptor that relies entirely on it's interference fit with the slide. It feels tight, but only time will tell if it's rigidity, ruggedness and accuracy will last.
3. Sight-in took around 30 shots; much more than they advertised. Of course my efforts could have been reduced had I read the directions and not inadvertently removed the windage spring cap from the left side, wondering why the POI wasn't moving.
4. Targets do not appear in the optic block, only the sighting triangle. Shooting it with both eyes open sort of fakes your mind into seeing the target with the triangle superimposed, but shooting with only the dominant eye open requires a strong 6:00 hold.
5. The sighting triangle was/is difficult to pick up quickly. This would likely be a hinderance for timed completion events.
6. Accuracy was definitely improved with the SeeAll sight. My best grouping at 15 yards was 5 shots within 2 inches from a rested position, also 10 shots within 5 inches off-hand (see photos). For me, that's about as good as I've done in quite a while.
7. With the sight mounted, the gun fit well in its original box, also no problem with it fitting into its holster, a Blackhawk Sherpa (...I know, I know).
Overall, I think that it's a keeper.
Mk2 Non-Tritium Pistol Sight