Type	Revolver
Place of origin	United States

Service history

In service	1898–1946
Wars	Spanish–American War Boxer Rebellion Second Boer War World War I World War II Korean War Vietnam War

Production history

Manufacturer	Colt’s Patent Firearms Manufacturing Co.
Produced	1898–1946
No. built	356,000+

Specifications

Cartridge	.38-40, .44 Russian, .44 Special, .44-40, .45 Colt, .455 Webley, .45 ACP, .38 Special, .357 Magnum as well as other less common calibers.
Action	double-action revolver
Feed system	6-round cylinder
Sights	fixed blade front, notch rear

The Colt New Service is a large frame, large caliber, double-action revolver made by Colt from 1898 until 1941. Made in various calibers, the .45 Colt version with a 5½” barrel, was adopted by the U.S. Armed Forces as the Model 1909.^[1]

The Colt M1917 revolver was created to supplement insufficient stocks of M1911 pistols during World War I.^[2] It was simply a New Service re-chambered to take the .45 ACP cartridge and used half-moon clips to hold the rimless cartridges in position. After World War I, the revolver gained a strong following among civilian shooters.^[3] A commercial rimmed