I bought a Primary Arms, 3 MOA dot (dislike the smaller sights like Bushnel TRS25).
It does well. One adjustment (windage) the detent was iffy, now it doesn't click. It does adjust and holds position. Primary Arms said it should be OK, if not, send it back.
I went cheap to test the concept. Did not like it on my AR, found it tolerable on a handgun........but being in varmint chambering, the 3 MOA dot was too big for 100 yd work. So...........it'll get a low power EER scope.
Think the sight would be great on a deer handgun. Since I like the idea, will replace it with an Aimpoint (different TC Contender barrel).