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Colt's · Pistol

Colt Model 1903 Hammerless

Blowback (semi-automatic) · .32 ACP · introduced 1903

Also known as Colt Pocket Hammerless, Colt Model M, Colt 1903 Pocket Hammerless

About the Colt Model 1903 Hammerless

The Colt Model 1903 Hammerless is a blowback-operated, single-action semi-automatic pocket pistol chambered in .32 ACP, designed by John Moses Browning and produced by Colt from 1903 to 1945. Despite its 'Hammerless' name, the pistol uses an internal hammer concealed beneath the rear of the slide, giving it a sleek, snag-free profile ideal for concealed carry. With over 570,000 produced, it became a favorite of the OSS, FBI, and U.S. Army general officers, who were issued examples roll-stamped 'U.S. PROPERTY' during World War II.

Known as the pistol of generals and spies, the Colt 1903 was carried by Eisenhower, Patton, and FDR, and remained a discreet sidearm of choice for OSS and intelligence operatives through World War II.

Colt Model 1903 Hammerless specifications

General

Type
Pistol
Action
Blowback (semi-automatic)
Firing mechanism
Hammer-fired
Trigger
Single action
Calibres
.32 ACP
Magazine capacity
8 rounds
Magazine
Detachable box magazine

Dimensions

Barrel length
95 mm (3.7 in)
Overall length
171 mm (6.7 in)
Height
114 mm (4.5 in)
Width
25 mm (1.0 in)
Weight (empty)
0.68 kg (1.50 lb)
Weight (loaded)
0.74 kg (1.63 lb)
Sight radius
140 mm (5.5 in)

Barrel

Rifling
Right hand
Grooves
6

Materials

Barrel
Steel
Receiver / frame
Steel
Slide
Steel
Stock
Walnut
Finish
blued

Performance

Muzzle velocity (typical)
270 m/s (886 fps)
Muzzle energy (typical)
168 J (124 ft·lb)
Effective range
25 m

History

Introduced
1903
Discontinued
1945
Production status
Discontinued
Country of origin
US
Designer
John Moses Browning

Features

  • Concealed hammer
  • Snag free profile
  • Fixed sights
  • Internal hammer

Safety

  • Grip safety
  • Manual safety
  • Magazine disconnect

Issued as the U.S. Army General Officers pistol from the 1940s until replacement by the M15 in the 1970s; recipients included Eisenhower, Bradley, Marshall, and Patton. President Franklin D. Roosevelt also carried one. The companion Model 1908 chambered the larger .380 ACP cartridge.

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