Ruger SP101 .357 Magnum 2.25 in Stainless DA/SA Revolver, 5-Shot, Model 5718 (KSP-321X) - 2020
This Ruger SP101 is a compact, stainless-steel .357 Magnum revolver configured as Model 5718 (also cataloged as KSP-321X). It features a 2.25 in barrel, a fluted 5-shot cylinder with Ruger’s triple-locking system, and fixed sights. Manufactured in 2020, it comes with an installed aftermarket rubber finger-groove grip and includes the original Ruger factory grip and case.
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: There are light markings from previous handling and use. Please refer to the photos for a closer look.
What’s Included
- Ruger SP101 instruction manual
- Ruger factory rubber grip with screw-in panel insert (not installed)
- Ruger factory hard plastic case
- Aftermarket rubber finger-groove grip (installed)
The SP101 Model 5718 pairs a compact 2.25 in barrel with a stainless-steel frame and cylinder for a durable, carry-friendly package chambered in .357 Magnum. Its double-action/single-action operation, smooth-faced trigger, and spurred, checkered hammer provide familiar Ruger revolver controls.
Ruger’s triple-locking mechanism secures the fluted 5-shot cylinder at the front, rear, and bottom, contributing to consistent alignment. The barrel features an integral underlug/shroud, and the rifling is a 1:16 in right-hand twist with 5 grooves.
Sight configuration is straightforward and robust: a pinned, replaceable front sight paired with an integral fixed rear trench on the topstrap. A transfer-bar safety is standard. The satin stainless finish is applied to the frame, cylinder, and barrel.
This revolver includes an installed aftermarket rubber finger-groove grip, with the original Ruger factory rubber grip and screw-in panel insert provided in the case. The grip frame accommodates a variety of grips. Ruger eagle branding is present on the frame, and markings note Newport, New Hampshire, USA.
Overall length is 7.20 in and weight is 26 oz, keeping the profile compact while retaining the handling characteristics expected of the SP101 series. Country of origin is the USA. UPC is 736676057184 and the manufacturer part number is 5718.




