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 Single Action Army and sold to the civilian market. The largest group of U.S. Colt Cavalry revolvers was inspected by David F. Clark, his D.F.C. cartouche being encountered on revolvers inspected from 1880 to 1887. During 1893, the .45 U.S. Colt Single Action Army revolver was retired by the Cavalry and replaced by the .38 caliber Colt Model 1892 Double Action Army revolver. The .45 Single Action Army revolver was still standard issue to the Infantry, Artillery and other branches of the U.S. Army. In 1895–1896, the U.S. federal government returned 2000 SAA revolvers to Colt to be refurbished; 800 were issued to