Ruger KP90 .45 ACP Stainless/Gray DA/SA P-Series Pistol – 4.5" Barrel, 7+1, 1995 Production
The KP90 marks Ruger’s first .45 ACP entry in the rugged P-Series line. Produced in 1995, this full-size pistol pairs a matte stainless slide with a gray anodized aluminum frame for a durable two-tone finish. Factory endurance tests earned the model a reputation for extreme toughness, and this example carries aftermarket wraparound rubber grips that add secure control without altering the pistol’s original mechanics.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent – bright, mirror finish with sharp lands and grooves.
Specific Condition Notes: Only minimal handling marks are present, and the bore remains spotless.
What’s Included
- Ruger KP90 pistol with installed one-piece rubber wraparound grip panels
- Two 7-round Ruger factory steel magazines
Introduced in 1991 and discontinued in 2004, the KP90 is sought after for combining .45 ACP power with the proven P-Series operating system. The “K” prefix denotes the stainless slide variant, and the 661-series serial number places this pistol firmly in mid-1990s production.
The stainless 4.5-inch barrel and slide ride on an aluminum-alloy frame, keeping weight manageable while preserving durability. Rear slide serrations offer solid purchase, and Ruger’s signature slide-stop takedown pin simplifies maintenance.
An ambidextrous safety lever doubles as a decocker, blocking the firing pin when engaged for safe carry. The DA/SA trigger allows a long first-pull followed by crisp single-action shots, while the exposed rounded-spur hammer makes manual decocking straightforward when desired.
Fixed three-dot sights—pinned front blade and dovetailed rear notch—provide a clear, snag-free sight picture. The single-stack magazine holds seven rounds plus one in the chamber, maintaining a comfortable grip width without sacrificing .45 ACP performance.