One good one, one monday sight - Steiner Micro Reflex Sight 1x 3 MOA

The first one I received worked good. The second one never worked and I'm returning. I expected a bit better quality from Steiner. The first one is starting to act up and the dot stays on really dim so I loosen battery cap. Sometimes it goes out normal. Other times I loosen the cap. I was going to put on all my dot guns but I found Vortex Viper for $150 each and they worked and with 6MOA probably better for my Benelli and 1301. Did I mention cheap and always work. Might need a riser on some guns. Vortex warranty is well, what can I say