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Colt’s Patent Firearms Manufacturing (1847-1947)(1955-1964) Colts Manufacturing Company (1947-1955) Colt’s inc. Firearms Division (1964- ) 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 Firearms Manufacturing Company of Hartford, Connecticut. The Colt Model 1908 Pocket Hammerless is a variant introduced five years later in .380 ACP caliber. Despite the title "hammerless", the Model 1903 does have a hammer. The hammer is covered and hidden from view under the rear of the slide. This allows the pistol to be carried in and withdrawn from a pocket quickly and smoothly without snagging. With gracious permission from Ed Buffaloe. Please note the excelent article in unblinking eye.com: “The 1903 Colt “Hammerless” Pocket Model” has full copyright limitations and can not be used without the writer’s permission. On 24 July 1896 John Moses Browning and Matthew S. Browning entered into an agreement with The Colt’s Patent Firearms Manufacturing Company. The agreement gave Colt’s the exclusive right to manufacture John M. Browning’s pistol designs in the United States and market them in the United States, Great Britain, and Ireland. On 7 July 1897 John M. Browning and Fabrique Nationale (FN) signed a similar agreement giving FN the right to sell Browning-designed weapons in much of Europe, and specifically excluding them from markets in the United States, Great Britain, and Ireland. According to Donald Bady, tacit in these agreements was the understanding that Colt’s would manufacture Browning’s locked-breech recoil-operated designs and FN would manufacture the unlocked-breech “blowback” designs. So it was that FN manufactured the 1899/1900 FN Browning in .32 caliber, and the following year Colt’s began to manufacture the Colt Automatic Pistol in .38 caliber. The FN was a stunning commercial success, with a production record of 100,000 pistols within three years and a total production of 724,450 over twelve years. By contrast, the original 1900 Colt Automatic Pistol had a total production run of less than 5000. As early as 1901 FN was anxious to put a larger military pistol on the market. FN designed a 9mm cartridge which became known as the 9mm Browning Long. It was nothing more than a scaled-up 7.65mm Browning (.32 A.C.P), with the same straight case and semi-rimmed design. FN asked Browning to design a gun for it. Browning, who was in his prime, delivered a prototype of the pistol to the FN factory in Herstal, Belgium in February 1902, and FN engineers immediately began improving the design and readying it for production. Because of its larger size, it became known as the “Grande Modèle.” Type I Colt M 1903 in .32 CaliberAt this point, Colt’s was looking for an automatic pistol that would have the kind of commercial success that the 1900 FN Browning had had, and despite its blowback action they asked Browning to patent his FN design in the U.S. and allow them to manufacture it in .32 caliber. Browning cut a deal with Colt’s to make at least 100 guns per day and sell them at a price that would be competitive with revolvers in the U.S., as well as give him a 40 cent royalty on every gun produced. He modified the design of the barrel bushing for the U.S. patent, which was filed on 3 April 1902 and granted on 22 December 1903 (#747,585), but that was the only design change he made for the U.S. version. Colt’s did not wait for the patent to be granted, but began tooling up late in 1902, and began production of what they called the “Colt Automatic Pistol, Pocket Model” in June 1903. Commercial sales began in August. To avoid confusion with its .38 caliber pocket model, Colt also referred to it as the Colt Hammerless Pocket Model, though it is not a true hammerless design. The internal factory designation for the gun was Model M. The 1903 Colt Pocket Model was considerably smaller than the 1903 FN Grande Modèle (which did not go into full production until 1907). Colt M 1903 Patent DrawingThe hallmark of the 1903 design was its simplicity, which helped make it the most copied pistol in the world. The only feature that might possibly be considered complex or extraneous was the grip safety, which most imitators omitted, but the 1903 was the first gun ever manufactured with a grip safety. I suspect that military feedback on the 1900 Colt Automatic Pistol had influenced Browning’s design philosophy. Having grown up in a gun shop, firearms safety required little thought for him, but he must eventually have realized that it was not so for everyone and he needed to make his pistols as safe as possible. The gun could also be disassembled without tools, which was another military preference. The Model 1903 had the recoil spring beneath the barrel. The barrel was firmly secured to the receiver by a series of lugs on the underside which mated with slots in the receiver. The sear, disconnector, hammer, and all springs were mounted in the receiver behind the magazine well, as was the grip safety. The magazine held 8 rounds. The quality of workmanship and finish on the early versions of this gun were the finest in the world at the time. The guns were heat blued and polished with oil-soaked leather. The trigger and manual safety lever were given a brilliant fire blue. In 1908 Colt began production of a .380 version of the gun. It differed only in the bore of the barrel, the width of the extractor, and the width of the magazine well. The .380 version could easily be converted to .32, but not vice versa. Over the 44 years of production (1903-1946) there were four or five major variants of the .32 Pocket Model and numerous sub- variants (not all of which will be described here). Type I Colt M 1903 in .32 CaliberType I: Serial numbers from 1 to 71,999. The first variant had a four inch barrel, a separate barrel bushing similar to the one eventually used on the 1911 Government Model .45, no magazine safety, and 14 square cut “plunge milled” slide serrations that tapered toward the bottom. It featured checkered hard rubber grips with “COLT” in a scalloped band inset at the top and the rampant colt logo in a circle at the bottom. The front sight was a tapered half-moon, and the rear sight had a U-shaped notch. At approximately serial number 8000, a screw was added to the right side of the gun to retain the safety. At approximately serial number 25,000, the gun was given 17 triangular-cut slide serrations. The original takedown arrow on the right side of the slide had four feather lines. At approximately serial number 55,000 a fifth feather line was added. The first 10,000 or so pistols featured only the Apr. 20, 1897 patent date, after which the Dec. 22, 1903 patent date was added. The earliest guns were marked “BROWNING’S PATENT”, per Browning’s agreement with Colt’s, but at some point Browning released Colt’s from this requirement and the guns were simply marked “PATENTED”, beneath which were the patent dates. These earliest guns had the rampant Colt logo in a circle at the rear of the slide, just behind the slide serrations. Type II: Serial numbers from 72,000 to 105,050. This variant differed from the first only in that it had the barrel reduced in length to three-and-three-quarter inches. I’ve never been able to determine a reason for this reduction in barrel length. Serial numbers 72,000 to 74,500 had no take-down arrow, due to the reduced slide length, but subsequent guns had a very short arrow with no feather lines. In 1908 the .380 version was introduced, and its serial numbers began with 1. Beginning with serial number 95,801, the extractor on the .32 version was widened to handle both .32 and .380 cartridges. In 1912 the circle was removed from the rampant Colt logo on the slide. Type III: Serial numbers from 105,051 to 468,097 (6251 to 92,893 for the .380). The primary difference in this variant was the elimination of the barrel bushing. A lug was added to the bottom front end of the barrel to keep it locked in position. At approximately serial number 114,700 the screw that retained the safety was eliminated. At some point, the slide cutout into which the barrel rotated was machined further to the rear, so the slide did not have to be retracted as far to disassemble the gun, and the takedown arrow was lengthened. However, feather marks were not added. About 1911 (at approximately serial number 115,000 for the .32 and 8000 for the .380) the scalloped band around the word “COLT” was eliminated in favor of two straight Type III Colt M 1903 in .32 Caliberlines, and an elongated letter “C” appeared behind the rampant colt instead of the circle. In about 1913 (at approximately serial number 160,000 for the .32 and 16,000 for the .380) the elongated “C” behind the colt was eliminated. In 1915 (at approximately serial number 190,000 for the .32 and 23,500 for the .380) a step was machined in the side of the lower curved portion of the slide. In 1919 Colt began striking the last four digits of the serial number on the underside of the breech block. By the end of the year they were striking the entire serial number in the same location. In 1920 the front sight was changed to a squared post. In 1921 the curvature of the top surface of the slide was changed give slightly more room on the two flat sides. In 1922 the hammer design was changed to give it a half-cock position, in which the manual safety could be engaged. Prior to this time, the hammer had to be fully cocked in order to engage the manual safety. In 1924 Colt began using checkered walnut grips with a Colt medallion (these grips may have been available earlier as a special order). The very earliest guns had a different medallion for each side, so that the colt faced forward on both sides, but by the end of 1926 they were using the same medallion on both sides, so the colt always faced to the left. There are a number of early minor variations of the checkered wooden grips. In 1926 the rear sight notch was made square. Type IV: Serial numbers from 468,098 to 554,099 (92,894 to 134,099 for the .380). The Tansley magazine disconnect safety was added at the end of 1926 to make this variant.Type IV Colt M 1903 in .380 Caliber - 1944 Type V: Serial numbers from 554,100 to 568,834 (134,100 to 137,484 for the .380). These were war production guns, which would be indistinguishable from the Type IV guns, except the vast majority had a Parkerized finish (from about serial number 562,000) and were stamped “U.S. Property” on the right side of the frame. They also had a flaming bomb acceptance mark stamped on them by the U.S. Ordnance Department, and were given an “M” prefix to the serial number. In 1944 the number of slide serrations was increased to 19, the rear sight profile was made more square and less rounded, and the front sight was serrated on its back surface. Manufacture of the Models 1903 and 1908 ceased in 1945, but they continued to be assembled from existing parts until 1953. Over the 44 years of manufacture, a number of Model 1903 and 1908 Colts were purchased for military and police use, some of which were given special markings. Around 1905 the Woonsocket Police of Rhode Island purchased an unknown quantity of .32 pocket models in the vicinity of serial number 18,020, which were marked “WPD.” Around 1913 the New York Police Department purchased an unknown quantity of .380 pocket models in the vicinity of serial number 15,900, which were marked “PDNY” and also given a separate serial number. In 1915 the Belgian Army placed an order for 24,002 pistols in .32 caliber. These guns were struck with an “A” inside a diamond to the right of the serial number. Most of these guns were also stamped on the barrel, slide, and frame with a Belgian military acceptance mark consisting of a crowned oval surrounding the letters “EGB”. In 1917 the United States Navy purchased 200 .32 caliber pocket models with serial numbers between 227,226 and 260,924. I do not know if they received any special markings. An unknown quantity of .32 caliber pocket models were sold to Great Britain during World War I. Most (but possibly not all) were stamped with crown over “V” and crown over “GP” proof marks on the slide, frame, and barrel. In World War II, approximately 7973 .32 caliber pocket models and 400 .380 caliber pocket models were sold to Great Britain. In 1942 an unknown number of .380 caliber pocket models in the vicinity of serial number 134,500 were sold to the British Purchasing Commission. These guns were marked “WAP” and given an additional serial number. In 1942 an unknown number of .380 caliber pocket models in the vicinity of serial number 134,000 were sold to the French Concession in Shanghai. These guns had a lanyard ring, and were given an additional serial number and marked “CONCESSION FRANCAISE CHANGHAI”. Field Stripping Remove the magazine and clear the chamber. Depress the grip safety and and draw the slide back until the takedown arrow on the right side of the slide lines up with the front portion of the frame. Twist the barrel counterclockwise as you face the front of the gun, so the lugs on the bottom of the barrel turn up into the cut inside the slide, and draw the slide and barrel off the front of the gun. The barrel may be removed from the early guns (with barrel bushing) by turning the barrel back to its normal position and twisting the bushing a half turn, allowing both to be removed from the front of the slide. The barrel may be removed from later guns by turning the barrel back to its normal position and withdrawing it from the front of the slide. Serial Numbers by Year Serial Numbers by Year Year .32 Caliber .380 Caliber 1903 1-4099 1904 4100-16499 1905 16500-33999 1906 34000-50999 1907 51000-67399 1908 67400-81799 1-2499 1909 81800-94429 2500-4389 1910 94430-106449 4390-6969 1911 106450-125524 6970-9749 1912 125525-141909 9750-12849 1913 141910-160739 12850-16874 1914 160740-176474 16875-20849 1915 176475-194674 20850-25324 1916 194675-235474 25325-30674 1917 235475-264699 30675-32999 1918 264700-283449 33000-34379 1919 283450-330924 34380-42124 1920 330925-377474 42125-53749 1921 377475-409699 53750-62899 1922 409700-426649 62900-69979 1923 426650-450149 69980-78779 1924 450150-457724 78780-82259 1925 457725-466699 82260-89274 1926 466700-480849 89275-95424 1927 480850-487999 95425-99349 1928 488000-492599 99340-94999 1929 492600-501159 95000-101824 1930 501160-506574 101825-107474 1931 506575-511524 107475-110359 1932 511525-513824 110360-113794 1933 513825-514399 113795-115934 1934 514400-517839 115935-117309 1935 517840-519324 117310-119859 1936 519325-522674 119860-121949 1937 522675-530124 121950-125124 1938 530125-538174 125125-128299 1939 538175-541324 128300-130984 1940 541325-545099 130985-132909 1941 545100-554099 132910-134099 1942 554100-558196 134100-134839 1943 1944 558197-568834 134840-137484 1945-1953 568835-572215 137485-138010 Markings on the 1903 Colt .32 Pocket Model Year Left Side of Slide Right Side of Slide 1903 “BROWNING’S PATENT” COLT’S PAT F.A. M’F’G. CO. PAT’D APRIL.20.1897 HARTFORD. CONN. U.S.A. AUTOMATIC COLT CALIBRE 32 RIMLESS SMOKELESS 1904 “BROWNING’S PATENT” COLT’S PAT F.A. M’F’G. CO. APR.20.1897 DEC.22.1903 HARTFORD. CONN. U.S.A .AUTOMATIC COLT CALIBRE 32 RIMLESS SMOKELESS 1906 PATENTED COLT’S PAT F.A. M’F’G. CO. APR.20.1897 DEC.22.1903 HARTFORD. CONN. U.S.A. AUTOMATIC COLT CALIBRE 32 RIMLESS SMOKELESS 1910 PATENTED COLT’S PAT F.A. M’F’G. CO. APR.20.1897 DEC.22.1903 HARTFORD. CT. U.S.A. AUTOMATIC COLT CALIBRE 32 RIMLESS SMOKELESS 1918? COLT’S PT. F.A. MFG. CO. HARTFORD. CT. U.S.A. PATENTED APR. 20. 1897 . DEC. 22. 1903 COLT AUTOMATIC CALIBRE 32 RIMLESS SMOKELESS Markings on the 1908 Colt .380 Pocket Model 1908 “BROWNING’S PATENT” COLT’S PAT F.A. M’F’G. CO. APR.20.1897 DEC.22.1903 HARTFORD. CONN. U.S.A. AUTOMATIC COLT CALIBRE 380 HAMMERLESS 1910 PATENTED COLT’S PAT F.A. M’F’G. CO. APR.20.1897 DEC.22.1903 HARTFORD. CT. U.S.A. AUTOMATIC COLT CALIBRE 380 HAMMERLESS 1920 COLT’S PT. F.A. MFG. CO. HARTFORD. CT. U.S.A. PATENTED APR. 20. 1897 . DEC. 22. 1903 COLT AUTOMATIC CALIBRE 380 HAMMERLESS A note about safety: You might think that the 1903 and 1908 Colt “Hammerless” pistols would be considered safe guns to carry since they have both a grip safety and a manual safety. However, they do not have a firing-pin lock safety and are therefore not “drop safe”. The firing pin is inertial, and if the gun is dropped hard enough and lands at the proper angle the firing pin can strike the cartridge with enough force to ignite the primer. There is at least one documented case of an experienced shooter being killed by dropping a 1903 Colt. These guns should not be considered safe to carry with a round in the chamber.” References Colt Automatic Pistols, by Donald B. Bady. Fadco, Beverly Hills, California: 1956. Colt 1903 Hammerless E-Book, by Gérard Henrotin. “Colt's 1903 Model "M" Pocket Pistols,” by Gary Paul Johnston. American Handgunner, March-April 2006. “Colt Model M,” by Robert T. Shimek. Guns & Ammo The Big Book of Surplus Firearms, 1998. FN...Browning: Armorer to the World, by Gene Gangarosa, Jr. Stoeger Publishing, Wayne, New Jersey: 1999. A History of the Colt Revolver and the Other Arms Made by Colt’s Patent Fire Arms Manufacturing Company from 1836 to 1940, by Charles T. Haven and Frank A. Belden. Bonanza, New York: 1940.” Please note the article can not be reproduced in any way without the permission of the writer, Ed Buffaloe. Copyright 2009 by Ed Buffaloe. All rights reserved. Approximately 570,000 Colt Pocket Hammerless pistols were produced from 1903 to 1945, in five different types. Some were issued to US Army and US Air Force general officers from World War II through the 1970s; these were replaced in 1972 with the RIA Colt M15 general officer's model, a compact version of the M1911A1. The Shanghai Municipal Police issued the M1908 to its officers in the 1920s and 1930s and it was a popular model with police in the United States such as the Boston Police Department. In addition to lawful owners, many gangsters of the pre-World War II era favoured the Model 1903 and Model 1908 because they were relatively small and easily concealed. It is said that Al Capone kept one in his coat pocket and Bonnie Parker used one to break Clyde Barrow out of jail after smuggling it into the jail by taping it to her thigh. Bank robber John Dillinger was carrying this model of pistol when he was shot by FBI agents outside the Biograph theater on July 22, 1934, and another famous bank robber, Willie Sutton, had one when he was captured by police in Brooklyn on February 18, 1952. Note: There was also a Colt Model 1903 Pocket Hammer pistol in .38 ACP, but this design is unrelated. The FN Model 1903 pistol design is related to the Colt Pocket Hammerless, but it is physically larger due to its chambering in the 9×20mm SR Browning Long cartridge. General officer models General officer models were often engraved with the officer's name. Recipients include generals Eisenhower, Bradley, Marshall, and Patton. Patton's Model 1908 was embellished with three (later four) stars on the grip panels to denote his rank. They were issued with a fine-grade leather holster, leather pistol belt with gold-metal clasp, rope pistol lanyard with gold-metal fittings, and leather two-pocket ammunition pouch with gold-metal fasteners. They came in russet or black leather (depending on service and regulations) and were made by Atchison Leather Products or Hickock. A cleaning rod and two spare magazines were also included. Generals were issued the Model M in .380 ACP, until 1950, when supplies ran out. At that point, they were substituted with .32 models until their replacement in 1972. The Pocket Hammerless was replaced by the M15 pistol made by Rock Island Arsenal in .45 ACP. General Officer models were issued with a brown or black (depending on service and regulations) leather holster, pistol belt, and ammunition pouch. A cleaning rod and two spare magazines were also included. The pistol was often engraved with the officer's name. The Model 1903 Pocket pistol is a Browning design, licensed to Colt and based on the FN Grande Modele. The proper nomenclature for the gun is Model 1903 Hammerless. In .380 calibre, it is the Model 1908. A very successful pistol, almost three quarters of a million of them were sold since their introduction in 1903 and their final end in 1945. During World War II, the US government used about 17000 .32 calibre pistols and around 3000 .380 calibre pistols, most of these having the parkerized finish. On both calibres, the US Property stamp was marked on the right side of the frame above the trigger. Today, the Pocket Hammerless is manufactured by U.S. Armament, and is licensed by Colt. This pistol is actually fired by action of a hammer striking and driving a firing pin into a center-fire cartridge's primer. The hammer is covered by the rear of the slide. The "hammerless" designation was merely an advertising designation pointing out the pistol's particular suitability for concealed carry. Special features include a serrated slide to prevent slippage during manual cycling of the slide and two safety mechanisms (a grip safety and a manual safety). The grip safety is a spring-loaded piece making up the back strap of the pistol. The grip safety, though not solely restricted to them, was a typical feature of Colt automatic pistols. A magazine safety was added on later models; this feature prevents the pistol from being fired with a round in the chamber and the magazine removed. These pistols were used by the Army, Navy, Air Force, the OSS, and also as a standard side arm for officers. Even though production seized in 1945, distribution continued into 1946, utilizing parts that have been left over. The frame designation for these models was known as “M”. The 1903 (1908) Automatic Pocket pistols are single action with unlocked blowback mechanism. This arm is known as a hammerless, but is really a concealed hammer weapon. With this weapon Samuel Colt, the good salesman, made the concept of the “disconnector” known to the public even when all pistols used it to ensure that only one cartridge is discharged at a time, when the slide is in battery. The safety catch on the frame blocks the sear. The magazine catch is located at the heel of the grip, My pistol is a Model1908 type 2, chambered for .380ACP, manufactured in 1917. (Ref: ‘Massad Ayoob's Greatest Handguns of the World’ by Massad Ayoob, ‘Standard Catalog of Colt Firearms’ by Rick Sapp, ‘Colt's 1903 Hammerless’ by Gary James in ‘Guns and Ammo’, ‘Famous pistols and handguns’ - A J R Cormack, ‘Pistols and revolvers’ – Maj F Myatt, ‘Pistols and revolvers’ - Smith, ‘Price guide for collector handguns’ - R H Balderson, ‘Pistols of the world’ by Hogg and Weeks p14/72. https://en.wikipedia.org/wiki/Colt_Model_1903_Pocket_Hammerless#:~:text=Approximately%20570%2C000%20Colt%20Pocket%20Hammerless,compact%20version%20of%20the%20M1911A1. https://unblinkingeye.com/Guns/1903C/1903c.html )

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