Colt Trooper MK III .357 Magnum, 6-inch Blued Revolver (1976) with Adjustable Sights and Walnut Grips
Manufactured in 1976, this Colt Trooper MK III is a six-shot .357 Magnum with the Mark III design and a 6-inch heavy barrel. It features a high-polish blued finish, adjustable sights, and checkered walnut grips with gold Colt medallions. Notable mechanical elements include the transfer-bar safety, coil mainspring, and Colt's rearward-pull cylinder latch—details that define the MK III series.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Minor, superficial scratches and blemishes are present, along with light finish wear in spots.
What’s Included
- Leather belt holster molded for a 6-inch revolver
This Trooper MK III is built on a carbon-steel frame with a high-polish blued finish and a six-shot fluted cylinder. The 6-inch heavy barrel has a solid, serrated top rib and a partial ejector-rod shroud, combining a classic Colt profile with purposeful features.
The Mark III action uses a coil mainspring and sintered-steel lockwork, paired with a transfer-bar safety and a double-action/single-action trigger system. The smooth-face trigger, wide checkered hammer spur with visible case colors, and vertically serrated backstrap provide a clean, controllable interface.
Sight regulation comes from an adjustable square-notch rear sight and a ramped front sight for a clear sight picture. Colt's rearward-pull cylinder latch and a knurled ejector-rod tip round out the handling details that make this model easy to run.
Grips are checkered walnut with inset gold Colt medallions, and all major components are carbon steel with blued finishes. This example aligns with 1970s production features, including the L-prefix serial format used during this period, and was made in the United States.