Ruger GP100 .357 Magnum Stainless DA/SA Revolver, 4.2 in Heavy Barrel, 6-Shot, 1990
Manufactured in 1990, this Ruger GP100 is a stainless-steel .357 Magnum revolver with a 4.2 inch heavy-profile barrel featuring a full-length underlug and serrated rib. It uses Ruger’s DA/SA action with a transfer-bar safety, a triple-locking 6-round fluted cylinder, and an adjustable rear sight. The one-piece peg grip frame is fitted with black rubber grips and wood insert panels. The interchangeable front-sight blade is not installed; the base is present.
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: There are handling and use marks on exterior surfaces. The interchangeable front-sight blade is not installed; the base is present. Please refer to the photos for a close look at the details.
What’s Included
- Ruger GP100 .357 Magnum revolver
- Eylar protective hard case
The GP100 platform is known for its triple-locking cylinder system that locks at the front, rear, and bottom for consistent alignment and durability. This example retains that design, paired with Ruger’s push-button cylinder release for straightforward operation and loading.
The 4.2 inch stainless barrel uses a heavy profile with a full-length underlug and a serrated rib, giving it a solid feel and a clean sighting plane. The adjustable rear sight complements Ruger’s interchangeable front sight system.
Controls include a smooth trigger and an exposed, checkered-spur hammer for confident DA/SA use. The transfer-bar safety provides dependable ignition while keeping the firing pin protected until the trigger is pulled.
The brushed stainless frame, cylinder, and receiver match for a uniform finish, and the one-piece peg grip frame accepts the factory black rubber grips with wood insert panels. Built in the United States, this 1990 GP100 combines classic construction with user-friendly service features.