So many 1911A1 pistols were produced by the end of World War II (approximately 1,900,000) that the military cancelled all new orders and began to "arsenal refinish" existing pistols. Arsenal Refinishing refers to taking parts off complete firearms in order to fix another. This is common practice in the military and some large police departments.
The 1911A1 design would endure until the lawyers got involved and Colt was forced to introduce the Series 80 line of 1911 pistols in 1983. This model change would add an internal firing pin safety that prevents the pistol from firing unless the trigger was pulled completely to the rear. The Series 80 would come in several configurations including: Government Model, tactical, competition models and Combat and Lightweight Commander styles with blued, satin nickel and even stainless finishes.
In the late 1970s, due to political pressure from Congress to standardize a single military pistol design (because Congress knows so much about pistol design?) The United States Air Force conducted the Joint Service Small Arms Program to select a firearm that would use the NATO 9 mm Parabellum round. The Beretta 92S-1 was chosen. Subsequent test by the United States Army in 1981 (the XM9 trials) would lead to the adoption of the Beretta 92F on January 14, 1985.
Strangely enough, the Marines have now adopted the Colt M1911A1 Rail Gun, now designated M45 Close Quarter Battle Pistol. Spending $22.5 Million over the next 5 year to receive 4,000 pistols the new sidearm is just what the military needed to replace those Berettas. I guess Mr. Browning’s design isn’t quite over the hill just yet.