The Colt M1878 is a
double-action
Double action (or double-action) refers to one of two systems in firearms where the trigger both cocks and releases the hammer.
* Double-action only (DAO) firearms trigger: The trigger both cocks and releases the hammer. There is no single-action ...
revolver
A revolver is a repeating handgun with at least one barrel and a revolving cylinder containing multiple chambers (each holding a single cartridge) for firing. Because most revolver models hold six cartridges before needing to be reloaded, ...
that was manufactured by
Colt's Manufacturing Company
Colt's Manufacturing Company, LLC (CMC, formerly Colt's Patent Firearms Manufacturing Company) is an American firearms manufacturer, founded in 1855 by Samuel Colt that has become a subsidiary of Czech holding company Colt CZ Group. It is th ...
from 1878 until 1907. It is often referred to as the "Frontier" or the "Double Action Army" revolver, and was manufactured to shoot a variety of rimmed, centerfire, and black powder cartridges, in calibers detailed nearby. A total of 51,210 Model 1878 revolvers were manufactured, including 4,600 for the US Ordnance Department. These are known as the "Philippine" or "Alaskan" models.
History
Samuel Colt
Samuel Colt (; July 19, 1814 – January 10, 1862) was an American inventor, industrialist, and businessman who established Colt's Patent Fire-Arms Manufacturing Company and made the mass production of revolvers commercially viable.
Col ...
experimented with double-action revolver systems, but he considered them to be unreliable. After Colt's patent expired in 1857, other manufacturers began producing double-action revolvers, but Colt's Manufacturing did not manufacture its own double-action revolver until 1877, twenty years after the patent had expired.
The M1878 was designed by
William Mason William, Willie, or Willy Mason may refer to:
Arts and entertainment
*William Mason (poet) (1724–1797), English poet, editor and gardener
*William Mason (architect) (1810–1897), New Zealand architect
*William Mason (composer) (1829–1908), Ame ...
, Colt's factory manager and
Charles Brinckerhoff Richards
Charles Brinckerhoff Richards (December 23, 1833 – April 20, 1919) was an engineer who worked for Colt's Patent Fire Arms Co., where he was responsible for the development of the Colt Single Action Army revolver. Richards was a founder of the ...
, Superintendent of Engineering. It was similar in design to the
Colt Model 1877. The Model 1878 had a larger frame, and is therefore sometimes referred to as the "large frame" double-action revolver, while the Model 1877 is likewise referred to as the "small frame" double-action revolver. The Model 1878 was considered a more robust and reliable design than the Model 1877.
Design and features
The design of the Model 1878 was based on the Model 1877, which in turn was based heavily on the design of the earlier
Colt Single Action Army
The Colt Single Action Army (also known as the SAA, Model P, Peacemaker, or M1873) is a Trigger (firearms)#Single-action, single-action revolver handgun. It was designed for the U.S. government service revolver trials of 1872 by Colt's Patent Fi ...
revolver. A strut is added to connect the trigger movement to the hammer. The top of the trigger slips beyond the strut so that the hammer will stay in full cock if it is pulled back manually.
The Model 1878 had a larger frame than the Model 1877, which allowed it to fire larger and more powerful cartridges such as the
.45 Colt and
.44-40 Winchester, and used the same barrel & ejector parts as the Single Action Army revolver and a very similar cylinder. At one time, the factory modified Model 1878 cylinders for use in single-action revolvers in an attempt to use up spare parts.
Variants
The Model 1878 was available in .32-20, .38 Colt, .38-40, .41 Colt, .44-40, .45 Colt, .455 Webley, and .476 Eley. The most popular calibers were the .44-40 Winchester and .45 Colt.

Standard grips were black checkered hard rubber but some early revolvers were produced with checkered walnut grips. Barrel lengths were available from to inches.
Revolvers with 4-inch and shorter barrels did not have an ejector.
In 1902, 4,600 Model 1878 revolvers were produced for a U.S. Army contract. They were intended to equip the
Philippine Constabulary
The Philippine Constabulary (PC; , ''HPP''; ) was a gendarmerie-type military police force of the Philippines from 1901 to 1991, and the predecessor to the Philippine National Police. It was created by the Insular Government, American occupat ...
under
Brigadier General Henry T. Allen during the
Philippine–American War
The Philippine–American War, known alternatively as the Philippine Insurrection, Filipino–American War, or Tagalog Insurgency, emerged following the conclusion of the Spanish–American War in December 1898 when the United States annexed th ...
(1899–1902). These revolvers had 6-inch barrels, hard rubber grips, and were chambered for the .45 Colt cartridge. They also had strengthened mainsprings and lengthened the triggers to give the user more leverage, thus giving a more reliability and consistent trigger pull, this is the primary reason for the enlarged trigger guards. The strengthened mainspring was necessary to fire the .45 Colt Government rounds which had a less sensitive primer compared to the civilian .45 Colt ammunition. Many people have incorrectly assumed that this was to allow the revolver to be operated while wearing gloves in cold weather, that means that the "Alaskan Model" is a misnomer.
These revolvers are also unofficially designated the Colt 1902 Philippine Model (Colt M1902).
[McCollum, I. (2017, January 26). Colt 1902 philippine model. Forgotten Weapons , Your destination for rare, exotic, and prototype firearms. https://www.forgottenweapons.com/colt-1902-philippine-model/]
References
External links
The Colt Revolver in the American West—Double Action Frontier
{{Use dmy dates, date=June 2017
Colt revolvers
.45 Colt firearms
Early revolvers
Double-action revolvers
Guns of the American West
Military revolvers
Revolvers of the United States
Klondike Gold Rush
North-West Mounted Police
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