I can't say enough about this optic. For a long time I was a huge Eotech fan (and still am), but a friend sold me on the idea of giving this thing a try since I never had. I have since added two more to my collection and love them. The battery life is extremely long, the clarity of the dot is great, and the lenses are extremely clear and bright. You can't possibly ask for much more out of a sight. The 2 MOA dot is great for longer shots. I have one of these mounted on an M&P 15-22 and love it for those 100 yd shots on clay targets. With my Eotech on there I had to guess where the clay was under the dot, because the dot was so much larger then the target. If you pick this up you will not be disappointed.