One word.... Awesome! Went out to the range to break it in. They recommend for the first 100 rounds cleaning after every 10 rounds. I cant shoot on my property since I am on the city limit side of the road literally , so have to pay hourly at the range. Called dpms and told them my situation and the guy i talked to said dont worry about the 10 round rule. Told him i planned on 50 rounds but actually went to 100. This thing is just way too much fun! I didnt even bother to sight it in yet during the break in period, but shot a hair over 1 inch groups at 35 yards. Granted they were about 1.5 inches high and to the left. But a click of my magpul iron rear sight just made them 1.5 high. I am pretty impressed with it so far. I used my front sight tool when I got home and raised it one click. Also cleaned it up and am excited for round two sunday. Was running federal bulk ammo and in 100 rounds had two rounds fail to go boom. I put them in a empty mag and still failed, so they were duds.