Colt Trooper MK III .357 Magnum Revolver, 4-Inch Blued, 1977 Production, DA/SA, Adjustable Sights
This 1977 Colt Trooper MK III stands out with its polished blued finish, 4-inch carbon-steel barrel, and classic checkered walnut target stocks with gold Colt medallions. Built with MK III internals and a transfer-bar system, it offers robust, modernized mechanics in a 1970s Colt revolver. It is chambered in .357 Magnum and is compatible with .38 Special, and it presents with an excellent bore and strong mechanical integrity.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This revolver appears very well maintained. Cylinder lockup and timing are solid.
What’s Included
- Colt Trooper MK III .357 Magnum revolver (4-inch, blued)
The Trooper MK III uses Colt’s MK III coil-spring and sintered-metal internals, paired with a transfer-bar safety that allows safe carry with all chambers loaded. The action is double-action/single-action, feeding a six-shot fluted cylinder with a swing-out design and a knurled ejector-rod tip. Colt’s rearward-pull cylinder release latch provides the classic Colt manual of arms.
The 4-inch carbon-steel barrel features a solid, serrated top rib and no ejector shroud, keeping the revolver balanced and easy to index. Sighting equipment includes a serrated ramped front sight and an adjustable square-notch rear sight for precise elevation and windage control.
Exterior details include a polished blued finish with a color case-hardened hammer and a smooth blued trigger. The revolver wears checkered walnut target stocks with gold Colt medallions, delivering a secure grip and period-correct Colt styling.
Chambered in .357 Magnum and compatible with .38 Special, this USA-made 1970s-era example represents Colt’s engineering evolution in duty-size revolvers, combining durability, safety, and classic presentation.