Colt's · Pistol

Colt Lawman Mk III

Name: Colt Lawman Mk III
Brand: Colt's

Double action · .357 Magnum · introduced 1969

Also known as Lawman MK III, Lawman Mark III

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About the Colt Lawman Mk III

The Colt Lawman Mk III is a double-action .357 Magnum service revolver introduced in 1969 as an economical police and security duty gun built on Colt's coil-spring Mk III action. Effectively a 'service grade' sibling of the Colt Trooper Mk III, it carried fixed sights, no ejector-rod shroud, and a six-shot swing-out cylinder that also fires .38 Special. It was offered primarily with 2-inch and 4-inch barrels and remained in the catalog until 1983.

Colt's Mk III action ditched the company's century-old hand-fitted leaf-spring lockwork for coil springs and sintered, investment-cast parts, making the Lawman one of the first truly mass-producible Colt double-action revolvers.

Colt Lawman Mk III specifications

General

Type: Pistol
Action: Double action
Firing mechanism: Double action single action
Trigger: Double action
Calibres: .357 Magnum
Magazine capacity: 6 rounds
Magazine: Internal

Dimensions

Barrel length: 102 mm (4.0 in)
Overall length: 232 mm (9.1 in)
Weight (empty): 0.96 kg (2.13 lb)

Barrel

Rifling: Right hand
Grooves: 6

Materials

Barrel: Steel
Receiver / frame: Steel
Stock: Wood
Finish: blued

Performance

Muzzle velocity (typical): 440 m/s (1444 fps)
Muzzle energy (typical): 784 J (578 ft·lb)
Effective range: 50 m

History

Introduced: 1969
Discontinued: 1983
Production status: Discontinued
Country of origin: US

Features

Swing out cylinder
Fixed sights
No ejector rod shroud
Service grade

Safety

Transfer bar
Rebound hammer

Part of Colt's Mk III lineup that replaced the older hand-fitted lockwork with more economical coil-spring, investment-cast parts for easier mass production and maintenance.