Just got a new 16" upper Friday and put a carbine together. I put a Hahn scout rail with a Trijicon 1.25-4X Accupoint scope on it and went out yesterday to sight in. Using 250gr Hornady ammo, I sighted it 2.5" high at 100yds in only three shots(that's great considering the cost of ammo). I had a pepper popper set up at 500yards and it took three shots to hit it and knock it over. I had to hold about 10' over it and a little to the left but walked the shots in. It seems to be fairly accurate in that the rounds were horizontally consistant I just wasn't sure about the drop. I look forward to reloading and shooting this gun a lot.
Eddie