I finally got to the range last week for a few hours. I ran a few mags through my AR (M4 clone) and zeroed it for 25/50yds with the irons. I had found online a quick detachable A3 handle/sights and put it on. It shot way high and I could only lower my group a tad before the rear ran out of adjustment. I then just dialed it in with the front sight raised. I want this setup for defense and close shooting. Next time out with it I'll remove the handle and put on my detachable scope ( a Bushnell 1.5x4) and fine tune it about 1.5" high at 100. I like that zero for coyotes. I used Federal hardball but it really shows promise so far with the Hornady 110 BTHP. They claim it works fine for deer up to 200yds, and it is a good load for defense too. I like my trunk gun to have enough oomph to finish off a vehicle injured elk or get through a car door/windshield. I haven't messed with an AR for many years...but "things being what they are"..... :wink: