The Colt M1892 Navy and Army was the first general issue double-action revolver with a swing out cylinder used by the United States military.
A cutaway diagram showing the lockwork
A Colt New Army Model 1903, with lanyard ring
The Colt Single Action Army is a single-action revolver. It was designed for the U.S. government service revolver trials of 1872 by Colt's Patent Firearms Manufacturing Company and was adopted as the
A model with a 7+1⁄2 in. barrel
Colt Sheriff's Model, 3-inch (7.6 cm) barrel
Colt SAA formerly used by the San Antonio Police Department
Colt Single Action Army revolver (Model 1873), displayed at the Istanbul Military Museum, Istanbul, Turkey