Colt M1903 Pocket Hammerless

About the Colt M1903 Pocket Hammerless

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.

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.

Colt M1903 Pocket Hammerless specifications

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.