I got an AR15 a few days ago that came with alot of goodies on it. I bought it off of a friend. He got the EOtech sight with it but I am having trouble figuring out what model it is. It has the on and off and brightness adjustment on the back. It also has NV mode. Other than that the only other adjustments are sighting adjustments. It has the ballistic reticle. Can any of you help me figure out which model it is?