Samuel Colt new revolver had a stationary trigger and was in a larger caliber. Colt submitted his single prototype to the War Department as a "Holster revolver". Captain Samuel Walker of the Texas Rangers had acquired some of the first Colt revolvers produced during the Seminole War and saw first-hand their effective use as his 15-man unit defeated a larger force of 70 Comanche in Texas. Walker wanted to order Colt revolvers for use by the Rangers in the Mexican–American War, and traveled to New York City in search of Colt. He met Colt in a gunsmith's shop on January 4, 1847,
Colt M1892 Colt M1892 The M1892 Colt Army & Navy was the first general issue double-action revolver with a swing-out cylinder used by the U.S. military. In 1892 the gun was adopted by the Army in .38 Long Colt caliber, and the revolver was given the appellation New Army and Navy. Initial experience with the gun caused officials to request some improvements. This would be an ongoing condition, resulting in Models 1892, 1894, 1895, 1896, 1901 and 1903, as well as a Model 1905 Marine Corps variant. The revolver featured a counter-clockwise rotating cylinder, which could be opened for loading and ejection