Overview

The Colt Single Action Army is a single‑action revolver introduced in the early 1870s and commonly associated with the American West. Designed for durability and straightforward operation, it has a six‑round cylinder and a hammer that must be cocked before each shot. Often called the "Peacemaker," the design became widely known through military use, civilian service, and its frequent appearance in literature and film.

Design and key characteristics

The Single Action Army is a solid‑frame, fixed‑cylinder revolver built around a short list of basic components: the barrel and frame, cylinder, hammer, trigger, grip, and a loading gate at the rear of the right side of the frame. Its mechanism is "single action," meaning pulling the trigger only releases the hammer; the shooter must pull the hammer fully to the cocked position before each shot. The typical ammunition capacity is six cartridges in the cylinder. Variants were produced in different calibers and barrel lengths and often featured custom finishes and engravings.

History and adoption

Introduced by Colt's company in 1873, the revolver was selected as a standard service sidearm by the United States Army the same year. That adoption helped spread its use among soldiers and later among lawmen, outlaws, and civilians in the expanding American frontier. Over time the model spawned a number of factory and aftermarket variants, and it remained in production in various forms for generations. Modern reproductions and official reissues have continued the model's commercial life into the 20th and 21st centuries.

Uses, cultural importance, and examples

Beyond its military role, the Colt Single Action Army became a symbol of frontier and Western culture. It was common among riders, ranchers, and law enforcement of the period and later gained iconic status through motion pictures and television. Today the revolver is used by collectors, historical reenactors, and participants in cowboy action shooting. Examples of notable features include the plain field‑grade models used for duty and highly decorated presentation pieces made for private owners or officers.

Variants, safety, and modern reproductions

  • Calibers and lengths: The model was offered in multiple chamberings and barrel lengths to suit different roles and preferences.
  • Finish and engraving: Factory and custom finishes range from simple blued steel to elaborate engraved and gold‑plated presentations.
  • Safety updates: Contemporary reproductions and aftermarket conversions often add modern safety features not present on original 19th‑century pieces.
  • Reissues and copies: Colt has produced official reissues, and several other manufacturers make replicas for collectors and sport shooters.

Distinctions and notable facts

The Colt Single Action Army is commonly contrasted with double‑action revolvers and semi‑automatic pistols: its single‑action mechanism requires more manual steps but is praised for a crisp, consistent trigger release. Its close association with a formative era of American history, plus its frequent depiction in popular culture, have made it one of the most recognizable handguns worldwide. The model's military adoption in 1873 is often cited as a pivotal moment in its rise to prominence; sources on the weapon often reference that adoption when discussing its historical significance (U.S. Army standard issue, 1873) and its service context (contemporary records and accounts).