Ruger SP101 .357 Magnum 4.2 in Stainless DA/SA Revolver, Model 5771, 5-Shot, Adjustable Sights
This SP101 is the compact, stainless .357 Magnum variant with the 4.20 in barrel and adjustable sights, cataloged by Ruger as Model 5771 (KSP-341X). Built on a one-piece stainless-steel frame with a satin finish, it features a green fiber-optic front sight, a fully adjustable rear, and a 5-shot cylinder. Manufactured in 2020, it comes in very good condition with an excellent bore and its factory-labeled case that matches the frame serial.
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 minor scratches and blemishes on the exterior. Light carbon is present on the cylinder face and around the forcing cone from prior firing.
What's Included
- Ruger factory hard plastic case with matching SP101 4.2 in .357 Magnum label (SKU 05771)
- Manual
- Lock
The SP101 platform is known for its compact size and robust stainless-steel construction. This example uses a one-piece stainless frame, cylinder, and barrel with a uniform satin stainless finish for durability and consistent appearance.
The 4.20 in barrel incorporates a full underlug and a serrated top rib. Inside, it has a 1:16 in right-hand twist with 5-groove rifling to stabilize .357 Magnum and .38 Special loads effectively.
Sighting equipment is set up for precision: a green fiber-optic front blade paired with a fully adjustable rear sight offering click windage and elevation adjustments. The exposed spur hammer supports double-action/single-action operation, and Ruger’s transfer bar safety is standard.
Ruger’s triple-locking cylinder system secures the 5-shot .357 Magnum cylinder at the front, rear, and bottom for consistent alignment. This configuration weighs 29.5 oz and measures 9.12 in overall. Grips are black rubber with checkered hardwood inserts featuring an engraved Ruger phoenix. The factory case label matches the frame serial for straightforward identification.