Peacemaker

Noun   (pēs′mā′kər)

Originally, a dueling pistol. In contemporary usage, a Colt Single Action Army revolver or a derivative. The Colt Single Action Army — also known as the Model P, Peacemaker, M1873, Single Action Army, SAA, and Colt .45 — is a single action revolver with a revolving cylinder holding six metallic cartridges. It was designed for the U.S. government service revolver trials of 1872 by Colt's Patent Firearms Manufacturing Company, today Colt's Manufacturing Company, and was adopted as the standard military service revolver until 1892.

Colt Peacemaker
Colt Peacemaker