The venerable Colt M-1911 was the basic handgun for the U.S. Military for the better part of a hundred years. Colt improved on the 1911 with several models but the NATO treaty determined that the influx of girls with manicured fingers and limp wrists would be better able to tolerate the modest kick of a 9mm than a .45 . Colt was abandoned for a foreign made Baretta and the 9mm would be the primary handgun. Later on another foreign maker H&K would supply firearms to the U.S. Military. Meanwhile Police departments went to another foreign made weapon the Glock. It isn't clear whether Colt was unable to compete with foreign gun makers or there was some sort of political infighting going on designed to put the venerable gun maker out of business.