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 Open Top Pocket Model Revolver White patent for metallic cartridges firearms manufacture expired (c. 1870) the Colt's Patent Fire Arms Manufacturing Company started working on its own metallic cartridge revolvers (Colt had previously been manufacturing the so-called Richards-Mason conversions). Thus, Colt introduced its first rear-loaders in 1871: the Colt House/Cloverleaf and the Colt Open Top Pocket Model Revolver. In the 1870s the firearms market was awash with cheaply made knockoffs of the .22 caliber Smith & Wesson Model One which sold for about $2. Colt's president Richard Jarvis decided it would not compete directly with the knockoffs; that its .22 would be of Colt quality.