Colt Walker of Texas had been the major purchaser of the early Paterson Holster Pistol (No. 5 model), a five shot cal .36 revolver, and Samuel Walker became familiar with it during his service as a Texas Ranger. In 1847, Walker was engaged in the Mexican-American War as a captain in the United States Mounted Rifles. He approached Colt, requesting a large revolver to replace the single-shot Aston Johnson holster pistols then in use. The desired .44-.45 caliber revolver would be carried in saddle mounted holsters and would be large enough to dispatch horses as well as enemy soldiers. The Colt Walker
Colt New Police Revolver Colt New Police Revolver The Colt New Police is a double-action, six-shot revolver (which can also be fired single action). This gun was chambered in the .32 New Police, which is dimensionally identical to a flat-nose version of the .32 S&W Long, except for the nose shape. In addition to the .32 New Police cartridge, the revolver was available in 32 Colt. The diameters of the two cartridges are not the same, with the 32 Colt being approximately 0.020 inches smaller in diameter than the New Police. Although the 32 Colt can be loaded and fired in the New Police