The Ruger GP100 in .22 LR is a double-action/single-action revolver with a 5.5-inch barrel, 10-round cylinder, satin stainless finish, and fiber optic front sight with an adjustable rear. It weighs 42 ounces (2.6 lbs) and has an overall length of 11.3 inches. 
 

Key Specifications 

• Caliber: .22 LR 
• Action: Double-Action / Single-Action 
• Capacity: 10 rounds 
• Barrel Length: 5.5 inches 
• Overall Length: 11.3 inches 
• Weight: 2.6 lbs (42 ounces) 
• Sights: Fiber Optic Front & Adjustable Rear 
• Grip: Black Rubber with Wood Insert 
• Finish: Satin Stainless Steel 
   

Detailed Features 

 
The triple-locking cylinder locks at the front, rear, and bottom of the frame, which keeps the cylinder in consistent alignment shot to shot. The transfer bar mechanism prevents the hammer from contacting the firing pin unless the trigger is fully depressed, eliminating accidental discharge from impact. Subassemblies disassemble without special tools, which simplifies maintenance. 
 
The patented grip frame accepts a wide range of custom grip panels if the factory rubber-and-wood grip doesn't suit the shooter's hand. 
 

Usage Scenarios 

 
For plinking and training, .22 LR in a 10-shot cylinder makes for long range sessions at low cost. The fiber optic front sight speeds target acquisition. The 42 oz weight settles the gun on target but makes it less practical for carry. New shooters find the manageable .22 LR recoil useful for building fundamentals.

The Ruger GP100 in .22 LR draws praise for build quality — the satin stainless finish and solid feel get consistent positive marks. The fiber optic sights are well-liked for improving acquisition speed, particularly in mixed lighting. Most users find it reliable and accurate for a rimfire revolver, and it's popular for both plinking and training.

At 42 oz, the weight is notable. Some shooters appreciate the stability it provides; others find it tiring for extended sessions. The trigger pull, particularly in double-action, is described as heavier than some competing .22 revolvers. Price sits above other .22 LR options in the same category, which draws occasional criticism, though most owners feel the build quality justifies it. Overall, satisfaction with the GP100 .22 LR is high among both new and experienced shooters.