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 York City (NYPD) Police Commissioner Theodore Roosevelt in 1896 to be the first standard-issue revolver for NYPD officers. A target version was made until 1905 with a 6-inch barrel and adjustable sights. The New Police Revolver was replaced in the Colt catalog in 1907 by the improved Colt Police Positive, which featured an internal hammer block safety and better lock work. 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