Testing SMR with new rear sight and original front sight resulted in a POI at 50 yds elevation change of about 16 inches, which was about twice as much as needed. I had taken the new front sight along and attempted a field swap of the front sight, but the new sight was too loose to install. I'll have to see if I can remedy that at home with a ball peen hammer. If not will have to order another front sight. Meanwhile have to wait for final resolution of SMR sighting system.