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IA Iron River Armory

Ruger GP100 .357 Mag 4.2″ 7-Shot Revolver

SKUTSW|48995 Conditionnew CategoryRevolvers
$917.06
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Specs at a glance

Ruger GP100 .357 Mag 4.2″ 7… SPECS AT A GLANCE 40 oz WEIGHT 4.20 inches SIZE
Editorial diagram — measurements verified during testing.

About this product

The Ruger GP100 is a stainless-steel double-action revolver built for consistent operation and straightforward maintenance. This configuration features a 4.20″ barrel, a seven-round cylinder, fiber optic front sight and adjustable rear sight. The revolver uses a patented transfer bar safety and a triple-locking cylinder that secures the cylinder at the front, rear and bottom for positive alignment. The stock is a cushioned black rubber grip with a hardwood insert for control and comfort.

Key Specifications

  • The model number is 1771.
  • The caliber is .357 Magnum.
  • The barrel length is 4.20 inches.
  • The cylinder capacity is 7 rounds.
  • The action is Double / Single Action.
  • The frame and components are finished in Satin Stainless.
  • The weight is 40 oz..
  • The sights are Fiber Optic front and adjustable rear.
  • The grip is cushioned rubber with hardwood insert.
  • The overall length is 9.50 inches.

Designed for dependable service at the range or in everyday carry contexts where a robust revolver is preferred, the GP100 balances durable stainless construction with user-friendly features like easy takedown of integrated subassemblies and broad aftermarket grip compatibility. Its combination of a seven-shot cylinder, positive cylinder lockup and straightforward controls makes it a practical choice for shooters who value reliable, low-maintenance hardware.

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Sources & methodology. Editorial review and rating by Travis Caldwell based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication.
$917.06