What a great scope for the money. Mounted it on my flat top AR. I'm using magpul Mbus flip up iron sights which cowitness perfect. You can leave this scope powered on and the battery life is supposed to be 3 years on the medium power setting. Scope looks and feels solid and very durable. The built in ratchet on the mount is awesome, just remember your mounting location on your rail and the scope stays zeroed if you need to take it off and on. I highly recommend this red dot.