It seems ok for the price. - Leapers UTG 3.8in ITA Red/Green Single Dot Sight w/Integral QD Mount

I bought this to try on my pellet gun or 22. It would not fit narrow rail on pellet gun. I got it mounted on 22 but cam-lock that closes mounting clamp can not be adjusted, so it could not be tightened on rail. It was kind of tight but still wiggled. I finally added a washer just behind the cam and pushed hard to lock it. That worked in removing the wiggle, but still have not tried shooting with it, so it may move when fired... It didn't cost much but it isn't worth much. Target dots are OK but not real clear - more like a target blob. Would be better for pellet gun if rail clamp fit.