Which revolver, introduced by Colt in 1873, became known as the “Peacemaker”?

The Colt Single Action Army, introduced by Colt in 1873, became known as the “Peacemaker.”

The U.S. Army adopted the revolver in 1873 as its standard service sidearm. It was chambered originally for the .45 Colt cartridge, and its single-action mechanism required the shooter to cock the hammer before each shot. The design had a solid frame, a six-round cylinder, and a distinctive loading gate.

Colt produced many versions in different barrel lengths and calibers. The Army-style model had a 7½-inch barrel, while shorter-barreled versions became popular with civilians, law officers, and performers. The nickname “Peacemaker” became strongly associated with the revolver, though it was also commonly called the Colt .45.

Western films later made the revolver an iconic symbol of the frontier. The gun was used by soldiers, lawmen, ranchers, and outlaws, but its popular image often reflects Hollywood storytelling more than everyday historical use.