The 9 mm round was selected for compliance with NATO standardization. Air Force, a number of 9 mm pistol designs were trialed in the late 1970s to find a replacement for the M1911. Under the Joint Service Small Arms Program which was run by the U.S. Additionally, a contract for 70,000 M9 pistols was signed in 2006 by the U.S. Marines have ordered large numbers of M9A1 pistols in the last year. The M9 has been modified as the M9A1, adding, among other things, a tactical rail for the attachment of lights, lasers, and other accessories to the weapon. In early 2006, the JCP was renamed Combat Pistol (CP), and the number of pistols to be bought was drastically cut back. It was scheduled to be replaced under an Army program, the Future Handgun System (FHS), which was merged with the SOF Combat Pistol program to create the Joint Combat Pistol (JCP). It officially entered Army service in 1990 according to the official Army website.
Some other models have been adopted to a lesser extent (namely the M11 Pistol), and older, or different, models remain in use in certain niches. armed forces, beating out many other contenders.
It won a competition in the 1980s to replace the M1911A1 as the primary handgun of U.S. It is essentially a Beretta 92F (later the 92FS), built to U.S. The M9 handgun, formally Pistol, Semiautomatic, 9mm, M9, is a 9mm pistol of the U.S.