Ruger Security-Six .357 Magnum 4-inch Blued DA/SA Revolver with Adjustable Sights (1980s)
This Ruger Security-Six is a 1980s-era, American-made .357 Magnum revolver with the model’s hallmark adjustable sights and square-butt grip frame. It features a 4-inch barrel, a durable blued steel finish, and checkered wood grips with Ruger medallions. The revolver is in very good overall condition with an excellent, mirror-bright bore.
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: The revolver shows some scattered light scratches and small blemishes on the finish consistent with careful handling and use.
What’s Included
- Ruger factory instruction manual for Security-Six / Speed-Six / Police Service-Six double-action revolvers
The Security-Six is the adjustable-sight variant in Ruger’s Six-Series, produced from 1972 to 1988. This example dates to the 1980s and represents the robust, investment-cast construction that defined the line before it was succeeded by the GP100.
Built on a one-piece investment-cast steel frame with a coil mainspring, this revolver emphasizes strength and durability. It uses a six-shot fluted steel cylinder and an exposed hammer, with a smooth-face trigger for consistent double-action and single-action operation.
The sighting system is practical and easy to fine-tune: a ramp front sight with an orange insert paired with a fully adjustable square-notch rear sight. The blued finish is complemented by checkered wood grips featuring Ruger medallions.
Chambered in .357 Magnum with a 4-inch barrel, this Security-Six offers a balanced profile and classic configuration. Ruger’s transfer bar safety adds an extra layer of protection without changing the revolver’s straightforward manual of arms.

