The Colt Model 1903 Pocket Hammer was a short-recoil, semi-automatic pistol, designed by the American arms designer
John Browning
John Moses Browning (January 23, 1855 – November 26, 1926) was an American firearm designer who developed many varieties of military and civilian firearms, cartridges, and gun mechanisms many of which are still in use around the world. He m ...
. It was a compact version of the Colt Model 1902 Sporting Model pistol derived from the original
Colt M1900
The Colt Model 1900 is a Recoil operation, short-recoil operated "self-loading", or Semi-automatic pistol, semi-automatic .38 caliber handgun introduced by Colt's Manufacturing Company at the turn of the 20th century. It also marked the introducti ...
. The
Colt M1902
The Model 1902 is a semi-automatic pistol developed by famous American firearms designer John Browning and produced by the Colt's Patent Firearms Manufacturing Company in the early 20th century. The Model 1902 was not a new design, but rather an ...
Sporting Model and 1903 Pocket Hammer models differ significantly from the military-inspired Colt 1902 Military Model although they fire the same cartridge. Its design is in no way related to the
Colt Model 1903 Pocket Hammerless
The Colt Model 1903 Pocket Hammerless (not to be confused with the Colt Model 1903 Pocket Hammer or the M1903 Springfield rifle) is a .32 ACP caliber, self-loading, semi-automatic pistol designed by John Browning and built by Colt Patent Firearm ...
or the
FN Model 1903
The FN Model 1903 (M1903, FN Mle 1903), or Browning No.2 is a self-loading semi-automatic pistol engineered by John Browning and made by Belgian arms manufacturer Fabrique Nationale (FN). It was introduced in 1903 and fired the 9×20mmSR Brownin ...
pistol.
Background
At a glance, this pistol is visually more similar to the later
Colt 1911
The M1911 (Colt 1911 or Colt Government) is a single-action, recoil-operated, semi-automatic pistol chambered for the .45 ACP cartridge. The pistol's formal U.S. military designation as of 1940 was ''Automatic Pistol, Caliber .45, M1911'' for th ...
than to the Colt 1902 Sporting Model from which it evolved. However, a cursory inspection will show many differences from the Model 1911: the lack of any
safety
Safety is the state of being "safe", the condition of being protected from harm or other danger. Safety can also refer to risk management, the control of recognized hazards in order to achieve an acceptable level of risk.
Meanings
There are ...
as well as the lack of a slide lock, the magazine release is at the bottom of the grip rather than a button on the side, and a wedge retaining the slide. The locking system uses two links vs. the single link of the later M1911. The two links (one near the muzzle, the other under the chamber) unlocked the barrel in a motion identical to that of a
parallel ruler
Parallel rulers are a drafting instrument used by navigators to draw parallel lines on charts. The tool consists of two straight edges joined by two arms which allow them to move closer or further away while always remaining parallel to each oth ...
. The drawback to this design was the need for a cross-wedge in the slide near the muzzle, for assembly and dis-assembly. If the slide cracked or the wedge came loose, the slide could exit the frame to the rear, injuring the shooter. The design limited the strength of the cartridge that could be used.
It was chambered for the
.38 ACP
The .38 ACP ( Automatic Colt Pistol), also known as the .38 Auto or 9x23mmSR, is a semi-rimmed pistol cartridge that was introduced at the turn of the 20th century for the John Browning-designed Colt M1900. It was first used in Colt's Model ...
, which is stamped on the slide as "Calibre 38 rimless smokeless". The .38 ACP was a slightly less powerful cartridge than the
9×19mm Parabellum
The 9×19mm Parabellum (also known as 9mm Parabellum or 9mm Luger or simply 9mm) is a rimless, tapered firearms cartridge.
Originally designed by Austrian firearm designer Georg Luger in 1901, it is widely considered the most popular handgun a ...
and it is now considered obsolete as there are no new firearms being chambered in .38 ACP. While using a locked breech, the pistol's locking design was not very strong, and was superseded in 1929 by an M1911A1-pattern pistol chambered in
.38 Super
The .38 Super, also known as .38 Super +P, .38 Super Auto, .38 Super Automatic, .38 Super Automatic +P, or 9×23mmSR, is a pistol cartridge that fires a bullet. It was introduced in the late 1920s as a higher pressure loading of the .38 ACP, a ...
.
The .38 ACP (aka .38 Auto) and the .38 Super use cases with identical dimensions, the only difference being the maximum operating pressures of each. It would be unwise to use new, factory .38 Super ammunition in any pistol based on the M1900 series Colts. (1900, 1902, 1903.) .38 Super pistols, on the other hand, can often work well with .38 ACP (or .38 ACP pressure-level) ammunition. They may require a slightly less-powerful recoil spring to function normally.
Initially popular, the sales of the .38 ACP models dropped off with the introduction of the M-1905 in .45, and then the M-1911 caused sales of the .38 to essentially cease. Colt listed it in their annual catalog until existing parts were used up in the early 1920s.
The .38 Super Automatic +P: A Brief History
by Mark Freburg, Outdoor Network, 2006
Production of the Model 1903 Pocket Hammer Model, basically just a short-barreled 1902 Sporting Model, began in earnest in 1904 (only one hundred pistols seeing production in 1903) with production varying from about 1,200 to 2,300 each year until 1917 when production curtailed sharply due to World War I. Up to late 1907, rounded stub hammers were used, but Colt, with the interest of the military and apparently the public now set on low profile spur hammers (due to that requirement on the Model 1907 US test pistols, these being modified Model 1905s with grip safeties), started phasing in low profile spur hammers on all their exposed hammer automatics that they were continuing in production: the 1903 Pocket Hammer Model, the 1902 Military Model, and the 1905 Model .45 ACP. Therefore, the rounded hammer Colt 1903 Pocket Hammers can help date those pistols at a glance to 1903–1907.
Unlike the Sporting Model from which it was derived and the 1902 Military Model, that had milled slide grooves and checkered slides respectively, the 1903 Pocket Hammer featured slide grooves at the rear of the slide. The first pistols featured the milled pattern similar to the 1902 Sporting Models, but Colt transitioned to rear cut slides around the spring of 1905, apparently for all their automatics. This would indicate that only about 1,700 or so 1903 Pocket Hammers had the rear milled slides, making them the earliest and hardest to find of the type.
Serial numbers of the 1903 Pocket Hammers started at 19999 in 1903 and went backward to 16000 into 1906. After that, serials resumed at 20000 and went up to 47227 ending in 1927 when production discontinued. An approximate total of 29,237 were produced which just about equaled the production of the Colt 1900 and 1902 .38 automatics. Prior to World War I, the pistol filled a niche by providing a relatively more powerful cartridge in a lighter and smaller pistol. However, the Colt 1903/08 Pocket Hammerless in .380 ACP (a lower power cartridge to the .38 ACP, but suitable to smaller simple blow-back pistols) appeared in 1909. The .380 Pocket Hammerless overwhelmed the Pocket Hammer model's sales but the 1903 persisted, possibly because the .38 ACP was still a more powerful cartridge than the .380 ACP. However, World War I clearly slowed production and after production surged to 3,200 in 1920 (probably to fill dealer back orders built up during the war), sales became very slow and the 1903 Pocket Hammer faded out of use, while the smaller 1903 .380 and .32 ACP Pocket Hammerless pistols thrived.
Only a scant handful of 1903 Pocket Hammers were used by the military, and then only as secondary arms purchased not pursuant to contract. However, the Model did see significant sales in Mexico prior to and possibly during the chaos of the Mexican Revolution (1910–1920) so many of these found their way into military and para-military hands. Additionally, some were purchased for the Philippine Constabulary
The Philippine Constabulary (PC; tl, Hukbóng Pamayapà ng Pilipinas, ''HPP''; es, Policía de Filipinas, ''PF'') was a gendarmerie-type police force of the Philippines from 1901 to 1991, and the predecessor to the Philippine National Po ...
in the 1920s.
References
Further reading
Goddard, William, The Government Models, Andrew Mobray Inc, 1988,1998,
External links
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{{Use dmy dates, date=June 2017
.38 ACP firearms
Colt semi-automatic pistols
Semi-automatic pistols 1901–1909
Short recoil firearms
Weapons and ammunition introduced in 1903