From military to police, to competition and survival uses, there's an optics solution ideal for your AR-15. Patrick Sweeney takes a look at some of the newest and very best scopes and red dots for the AR-15 platform.
Not only is the 6x48 big on a rifle, but it takes up so much rail estate there is no room for a back-up iron sight.
This photo gallery is an excerpt from the new Gun Digest Book of the AR-15, Vol. 4.