The Colt M1911 is an American pistol chambered in .45 ACP. It is reliable, powerful, ubiquitous and simple, perhaps John Browning's greatest invention amongst many. It has served with American troops in the trenches of France, in the fields of Poland, in the mountains of Korea, and in the jungles of Vietnam. Most M1911s are in fact M1911A1s, produced after 1924 after some design changes. In Oceanyka, the M1911 pistol is easy to find, and fills the holster of many a traveller.