The Ruger GP100 Standard is a single/double-action revolver chambered in .357 Magnum with a 4.2-inch barrel and a 6-round cylinder. It weighs 40 oz (2.5 lbs) and carries a satin stainless finish. The grip is a Hogue Monogrip rubber unit. 
 

Key Specifications 

• UPC: 736676017058 
• Caliber: .357 Magnum 
• Action: Single/Double Action 
• Capacity: 6 Rounds 
• Barrel Length: 4.2 inches 
• Weight: 40 oz (2.5 lbs) 
   

Key Features 

Dual Action Mechanism 

The GP100 operates in both single-action and double-action modes. Single-action mode cocks the hammer manually for a lighter, more precise pull. Double-action mode fires from a hammer-down start in one trigger stroke, which is faster but heavier. 
 

Adjustable Sights 

The adjustable rear sight and ramp front sight allow windage and elevation correction for different loads and distances, which makes this configuration more useful at the range than fixed-sight revolvers. 
 

Hogue Monogrip 

The Hogue Monogrip rubber construction fills the hand and absorbs recoil, which noticeably reduces felt impact during .357 Magnum firing. 
 

Stainless Steel Construction 

The satin stainless finish resists corrosion in wet or humid conditions and holds up through routine holster wear. 
 

Usage Notes 

This GP100 configuration does not include .38 Special compatibility noted on some other GP100 models with similar specs -- it is listed as .357 Magnum only. Verify the specific model's dual-caliber capability if that matters for intended use. At 40 oz. the revolver is well-suited to range shooting and home defense but runs heavy for concealed carry.

The Ruger GP100 in .357 Magnum draws consistently positive feedback from owners who prioritize reliability and build quality in a revolver.

The stainless construction gets the most consistent credit. Owners describe the finish as durable and the overall fit as tight. The dual-action trigger is praised for its predictable feel, which helps at the range and provides confidence in defensive scenarios. The Hogue Monogrip is specifically mentioned as an improvement over traditional grip materials for managing .357 Magnum recoil.

Accuracy across distances is viewed as strong, with multiple owners noting the GP100 performs at a level suitable for both range training and defensive use. The ability to run .38 Special alongside .357 Magnum (on the compatible models) gives flexibility between practice and high-power loads.

Size comes up in carry discussions. At 40 oz. and with the 4.2-inch barrel the revolver is less suited to concealed carry than compact alternatives, and most owners use it for home defense or range work. Overall the GP100 is viewed as a reliable, long-lasting revolver that holds up through sustained use.