Colt M1903 Pocket Hammerless
Colt's Manufacturing Company · Pistol · Out Of Production · 1903
Also known as: Colt Pocket Hammerless, Colt .32 Pocket Auto, Colt 1903 General Officer's Pistol
Overview
The Colt Model 1903 Pocket Hammerless is a compact, blowback-operated, single-action semi-automatic pistol designed by John Moses Browning and chambered in .32 ACP. Despite the 'Hammerless' name, it has a concealed internal hammer beneath the slide; the snag-free, slim profile made it a favourite concealment and pocket pistol. Roughly 572,000 were produced between 1903 and 1945, and it became the official United States General Officer's sidearm, also seeing wide use by police, detectives, and OSS operatives.
Specifications
| Weight (empty) | 680 g (24.0 oz) |
| Overall Length | 171 mm (6.73") |
| Barrel Length | 95 mm (3.74") |
| Height | 140 mm (5.51") |
| Width | 30 mm (1.18") |
| Action Type | Blowback |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Single Stage |
| Magazine Capacity | 8 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 290 m/s (951 fps) |
| Muzzle Energy | 183 J (135 ft·lbf) |
| Effective Range | 25 m (27 yd) |
| Barrel Rifling | Right Hand |
| Number of Grooves | 6 |
| Frame Material | Steel |
| Slide Material | Steel |
| Barrel Material | Steel |
| Stock Material | Wood |
| Finish | Blued |
Calibers
- .32 ACP · primary — also known as .32 Automatic, 7.65x17mm Browning SR, 7.65mm Browning
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Manual Thumb Safety, Grip Safety
- Features: Concealed Internal Hammer, Snag Free Slide, Slim Pocket Profile
Variants
- Colt M1908 Pocket Hammerless (.380 ACP) — Caliber Variant
- Colt M1903 General Officer's Pistol — Military Issue
Service history
Operators
- United States Army · as General Officer's Pistol, M1903 (.32)
- Office of Strategic Services
Conflicts
- World War I (1914-1918)
- World War II (1939-1945)
Production
Estimated total produced: 572,215 · Production years: 1903-1945
Production ceased in 1945; surplus parts were assembled into the early 1950s
Origin
Country of origin: United States
Designer: John Moses Browning
Discontinued: 1945
Notes
Early Type I pistols (1903-1908) had a 4-inch barrel and 7-inch overall length with a barrel bushing; from Type II onward the barrel was shortened to 3.75 inches and the bushing removed. Canonical figures here reflect the dominant later production.
Background
Despite the 'Hammerless' name, the pistol hides a real hammer under the slide, giving it the slim, snag-free profile that made it a favourite concealment gun. It became the official U.S. General Officer's sidearm, carried by Eisenhower, Marshall, Bradley, and Patton, and was issued to OSS spies and operatives in WWII, cementing its reputation as the quintessential 20th-century intelligence pistol.