The Springfield Armory pistols were rebuilt every year for the Camp Perry National Matches in order that each shooter that drew a pistol was using the latest technology. The Micro sights were used for two years, with only the Triangle sight being used longer, three years. If there were a "fatal flaw" in the Micro sights it would have been found in the first year of use. Ruger successfully used the Micro sight on the target models for many years.