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With sales of the 357 down, Colt decided to simplify the line in 1961 by discontinuing the 357 and offering the Trooper in .357 Magnum as well as .38 Special.
The new Trooper model was really nothing more than the Colt Officer's Model Match with a ramped front sight on a large ramp base.
The Frame was Colt's standard medium size "E" frame that had been made virtually unchanged since 1908.
The transfer bar ignition features a firing pin mounted in the frame.
Colt designed the action with specially heat-treated parts for maximum long service life.
Designed as a less expensive alternative to the upscale Colt .357 and the later Colt Python, it was marketed to law enforcement agencies as well as civilian firearms enthusiasts and collectors.
Introduced to the firearms market by the Colt's Manufacturing Company in 1953, the Trooper and its high-end cousin, the .357 Magnum, were introduced with the intention of addressing the medium frame revolver market, as law enforcement officers had long complained about the weight of earlier models.
Manufactured with fine carbon steel, it was available in both blued and nickel-plated finishes.
How to search for your firearm or gun date of creation or manufacture via it's serial number.
During the 1960s and 1970s several revolver manufacturers adopted the transfer bar ignition system.
This includes Charter Arms, Colt, Ruger, and Dan Wesson.