The Ruger GP100 Standard is a double/single-action revolver chambered in .357 Magnum, with .38 Special compatibility, featuring a 3-inch barrel and a 6-round cylinder. It weighs 36 oz. with an overall length of 8.5 inches. The finish is satin stainless steel and the grip is a Hogue Monogrip in black rubber. 
 

Key Specifications 

• Model Name: Ruger GP100 Standard 
• SKU: 21905009 
• UPC: 736676017157 
• Caliber: .357 Magnum / .38 Special 
• Action Type: Double/Single Action 
• Capacity: 6 rounds 
• Barrel Length: 3 inches 
• Overall Length: 8.5 inches 
• Weight: 36 oz. 
• Finish: Satin Stainless Steel 
• Grip Material: Hogue Monogrip Black Rubber 
   

Detailed Features 

The satin stainless construction resists corrosion and handles field conditions without special maintenance. The Hogue Monogrip fills the hand well and dampens felt recoil. The ramp front sight and integral rear sight provide consistent aiming without the complexity of adjustable rear sights. The DA/SA trigger allows both fast double-action pulls and precise single-action shots. 
 
The transfer bar safety requires a complete trigger pull to fire, which prevents discharge from impact or dropping. At 3 inches of barrel the revolver is compact enough for field or home defense carry while retaining the GP100's robust frame. 
 

Usage Notes 

The 3-inch barrel GP100 hits a practical point between the snub-nose 2.5-inch and mid-length 4.2-inch variants. The Hogue Monogrip is a notable feature that helps with recoil management on .357 Magnum loads. The 6-round cylinder (vs. 7 rounds on some other GP100 configurations) is worth noting for purchasers comparing models.

The Ruger GP100 Compact in .357 Magnum with the 3-inch barrel and satin stainless finish draws strongly positive reviews focused on reliability, build quality, and practical performance.

The stainless construction is consistently praised for durability and resistance to environmental wear. The Hogue Monogrip gets specific credit for improving recoil management with .357 Magnum loads while remaining comfortable for extended sessions. Trigger feel in both actions is described as smooth and consistent.

Accuracy at defensive distances with the 3-inch barrel is reported as solid. The combination of .357 Magnum power and a compact enough size for field or home carry is viewed as well-balanced. The dual-caliber capability of running .38 Special for practice and .357 Magnum for use is a recurring practical advantage users mention.

Weight at 36 oz. is heavier than many polymer semi-automatics in the same size class, which some users flag for extended carry. The revolver's simpler operating system and straightforward maintenance are frequently cited as advantages for users who prefer a lower-complexity firearm. Most owners view the GP100 as a strong value in the quality revolver segment.