Colt Trooper Mk III .357 Magnum Revolver, 4-Inch, 1975 Production – High-Polish Blued Finish
Manufactured in 1975, this Colt Trooper Mk III represents the first Colt medium-frame series to feature a transfer-bar safety system. Built on a carbon-steel frame with Colt’s deep Royal Blue polish, the revolver pairs a heavy 4-inch barrel and full-length ejector-rod shroud for balanced handling reminiscent of the Python line. Collectors value the Mk III for its coil-spring lockwork that reduced hand-fitting while maintaining the smooth double-action Colt is known for.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good – Clean, well-maintained, minor wear marks.
Rifling Condition: Good – Intact, well-defined lands and grooves.
Specific Condition Notes: Minor scratches, light scuffs, and holster wear are visible on the high-polish blued surfaces; finish remains uniform with no pitting or structural damage.
What’s Included
- Hard plastic pistol case (red)
The Mk III series introduced Colt’s transfer-bar hammer-block design, adding a layer of safety without changing the familiar double-action/single-action trigger feel. This revolver retains that mechanism, combining modern functionality with classic Colt aesthetics.
The 4-inch heavy barrel features a solid top rib and full-length shroud that both protect the ejector rod and add forward weight for steadier sight alignment. A pinned, serrated ramp front sight teams with a fully adjustable Colt Accro-type rear sight, offering a clear sight picture for precise shooting with .357 Magnum loads.
Checkered walnut stocks with silver Colt medallions complement the High-Polish blued finish, providing a secure grasp and period-correct presentation. Recessed chambers, a smooth trigger, and an exposed hammer complete the Trooper’s well-known functional touches.
Serial number prefix “J” confirms 1975 production, placing this revolver squarely within the desirable early years of the Mk III run. Its blend of collectible status, sturdy construction, and user-friendly features makes it a strong candidate for both range use and long-term appreciation.