Well I finally got to take the ACR out to the range for the first time since I bought it then had to send it back to bushmaster. I sighted the irons to 25 yards and then got the aimpoint PRO sighted in at 50 yards. After sighting it all the rounds were inside the dot which made me feel pretty happy using PMC x-tac 62 grn. Before shooting it I was a little worried about barrel tightness and accuracy since my barrel ratchet has the positive stop at click 11 vs the 6-9 I have seen on here. No malfunctions and it would shoot just fine using the mag as a monopod. I am very pleased with it and glad i finally got to shoot it.