I read Greg's post a while back and decided that I would go get one and try it out. My findings and opinions of this sight is as follows......
1. Nice looking sight but there is a glare on the plastic light reflector
2.if your using the sight in a bright situation your probably going to lose
the sight pin in the light.
3. My findings with the battery life was that it is very short. I would say two weeks but I don't know how much this sight was used before I bought it. It is also a possibility that the sight was left on.
4. It is not impossible but it is kind of a pain to adjust the pins

That is all I have at this point, If I were using it Im sure there would be more. Hope this helps, my suggestion is that is you need a good hunting sight then go by a Viper.