Tried to sight in the AR today. It was 2 degress F when I shot so it wasn't the most comfortable time to sight in. I had to turn down the front sight as it was shooting low. I got it hitting in the black at 25 yards after some adjustment. I may not have centered the front sight perfectly on some shots as I only got about a 2 inch group. I then took 2 shots that seemed perfect and got 2 shots in 1 very slightly oblong hole. So I believe the gun is capable of excellent accuracy.
I did notice that the trigger pull has alot of creep and it takes alot of squeezing before it goes off.
I only tried some 55 and 75 grain bullets so will experiment some more.