I have one. It is a little tricky to get adjusted. Because of how it adjusts it takes a lot of fine tuning. Not a sight you can just move a tiny bit every now and then. You adjust the up down you have to rotate the pin housing to keep your pins straight and this in turn can affecet the up down.

When I bought mine the guy at Cablelas told me to be very careful with the sight light. He said the housing that holds it in is pretty fragile and would break. Viola, two days later mine was broke. I was just taking the light out as they are illegal in South Dakota. I returned the sight and took the light out and won't put it back in.

For the money I wouldn't recommend the sight unless you are going to take the light out as I did. As fragile as it is you will break it within a year, I don't care how careful you are with it. Until they fix that issue I would tell you to stay away.