Running a MK20 SSR right now, It's consistent 1/2 MOA. 1/3 MOA if I try an do my part. Probably the biggest surprise since shooting the system aft. I did unfortunately have some issues with the trigger group shooting the rifle on burst and auto up to 9 rounds, I swapped out trigger groups and still had the same issue. Ended up cleaning the trigger group a bit and it seemed to help.