Sturm Ruger P90 .45 ACP DA/SA P-Series, 4.5 in Barrel, Stainless/Gray, 7+1 (1991)
Ruger’s first .45 ACP entry in the metal-frame P-Series, this 1991 P90 pairs an investment-cast aluminum-alloy frame with a stainless slide featuring longitudinally brushed flats and a bead-blasted top and radiused contours, in a durable two-tone finish. It is a full-size, DA/SA pistol with an ambidextrous slide-mounted safety/decocker, fixed sights, and a single-stack 7-round magazine. Condition is very good with an excellent, mirror-bright bore.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are some light scuffs and minor wear present. Overall, it remains in great shape for its age.
What’s Included
- Sturm Ruger P90 .45 ACP pistol
- 1x 7-round steel magazine with witness holes
The P90 uses a locked-breech, short-recoil, tilting-barrel operating system and a single-stack magazine design for a 7+1 capacity. Its 4.5-inch barrel and full-size format deliver classic .45 ACP performance in a robust, American-made package.
The frame is an investment-cast aluminum alloy with a matte gray hard-anodized finish, matched to a stainless slide with brushed flats and a bead-blasted top/contours for a two-tone stainless/gray look. A lanyard loop at the heel of the frame adds a practical carry point.
Controls include a double-action/single-action trigger system, an ambidextrous slide-mounted safety/decocker, a left-side push-button magazine release, and an exposed spurred hammer. The slide features an external extractor and an enlarged ejection port for reliable cycling.
Sights are fixed, with a front blade carrying a single white dot and a square-notch rear that is dovetailed into the slide and secured by a set-screw. One-piece black ribbed grip panels with Ruger medallions provide a solid hold.

