Ruger GP100 KGP-161 .357 Magnum 6-inch Stainless DA/SA Revolver (2006) with Aftermarket Fiber-Optic Rear Sight and Hardwood Monogrip
This 2006 Ruger GP100 KGP-161 stands out as a 6-shot .357 Magnum with a 6-inch full-underlug stainless barrel and a brushed stainless finish throughout. It features an aftermarket adjustable rear sight with twin green fiber-optic elements and a one-piece hardwood monogrip. The revolver is in excellent overall condition with an excellent, mirror-bright bore, and it carries the SOUTHPORT, CONN. U.S.A. rollmark.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Specific Condition Details: This firearm displays only light signs of wear and handling. Minor surface scratches mark the metal in a few spots. It remains clean overall.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
What’s Included
- Soft zippered pistol rug (OD green/black)
- Crimson Trace Lasergrips LG-344 (red laser) for Ruger GP100/Super Redhawk/Alaskan — uninstalled; includes original box, user guide, and installation hardware
- Adjustable rear sight blade with twin green fiber-optic elements (installed)
The GP100 configuration here is the cataloged KGP-161 pattern: a stainless-steel, 6-inch, full-underlug model with adjustable sights and a fluted 6-shot cylinder. Construction is stainless throughout with a uniform brushed finish, and the ejector rod is shrouded. The frame carries the SOUTHPORT, CONN. U.S.A. marking and a frame-mounted firing pin bushing is visible.
Action is double-action/single-action with Ruger’s transfer-bar safety system. The revolver uses Ruger’s triple-locking cylinder mechanism and a smooth-face trigger paired with a checkered hammer spur for controlled operation. The cylinder is the standard fluted six-shot pattern.
Sighting equipment includes a pinned ramp front sight with an orange insert and an adjustable rear sight fitted with a twin green fiber-optic blade (aftermarket). The 6-inch heavy barrel features a full underlug and a serrated top rib.
This example is customized with a one-piece hardwood monogrip featuring finger grooves and a palm swell. Also included, but not installed, is a Crimson Trace LG-344 red-laser grip set with its original box, user guide, and installation hardware.




