|Feed System||7 Round Box Magazine|
|Maximum Effective Range|
The M1911 is the prototypical American pistol of the 20th century, enjoying 74 years as the official sidearm of the United States Armed Forces. As is common with U.S. military designations, the 1911 in its name indicates the year it was officially adopted as standard issue.
Designed by John M. Browning, the M1911 uses a .45 caliber ACP (Automatic Colt Pistol) round in a semi-automatic firing system. These specifications were mandated by John T. Thompson after testing new pistol designs to replace the poorly performing Colt M1892, whose .38 caliber Long Colt rounds lacked the stopping power needed during the Philippine-American War.
During WWII, about 1.9 million newly (1924) designed M1911A1s were purchased by the U.S. military from five major U.S. weapons manufacturers. So many were procured that after 1945, the U.S. military stopped buying pistols altogether, and simply relied on existing inventories to refurbish M1911s when needed.