I bought these two years ago and mounted them on my photon. I never sighted the gun in. I set up a bolt rifle for the night vision instead of my AR to use it on and found out I need different rings to make it work. I had to order a primary arms extended one piece mount. I am now left with these rings and could save them for something else but I would rather trade them for a set of warne QD 30mm super high rings if anyone has any for trade. The rings have a lifetime warranty through sightmark.