Ruger GP100 .357 Magnum Stainless 4 Inch DA/SA Revolver (KGP-141), 1988 Production, Adjustable Sights
This 1988 Ruger GP100 in .357 Magnum is an early-production example with the 171- serial prefix. It features a 4 inch full-underlug stainless barrel with a serrated top rib, a brushed stainless finish throughout, and fully adjustable iron sights with a ramped front insert. Ruger’s monolithic, side-plate-less frame and triple-locking, six-round fluted cylinder highlight the platform’s hallmark construction. Includes the original Ruger factory box and manual.
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: Minor, superficial scratches and small blemishes are present on exterior surfaces. The bore is bright and clean.
What's Included
- Ruger factory cardboard box (yellow/black eagle logo)
- Original manual
Designated KGP-141, this GP100 pairs a 4 inch stainless barrel and adjustable sights with Ruger’s full underlug profile and serrated top rib. The brushed stainless finish is consistent across the barrel, frame, and cylinder for a cohesive look and durability.
Built on Ruger’s monolithic, side-plate-less stainless frame, this revolver uses a triple-locking cylinder system and a six-round fluted cylinder. The configuration reflects the GP100’s defining construction features from the late 1980s.
The action is double-action/single-action with an exposed hammer and a smooth-face trigger. A transfer bar provides the safety mechanism. Sighting is handled by a fully adjustable square-notch rear sight and a ramped front sight with a red/orange insert.
Ergonomics come from the one-piece black rubber grip with hardwood insert panels, a factory setup that provides a secure hold and a classic Ruger appearance. This U.S.-made example dates to 1988, aligning with the early 171- prefix GP100 production.