The Diamondback SDR is a small-frame revolver chambered in .357 Mag and also rated for .38 Special +P. It has a 2-inch barrel in polished stainless steel and holds 6 rounds. Sights are fiber optic with rubber grips completing the package. 
 

Key Specifications 

• Brand: Diamondback 
• Model: SDR 
• Caliber: .357 Mag 
• Action: Double Action 
• Capacity: 6 rounds 
• Barrel Length: 2 inches 
• Color/Finish: Polished Stainless 
   

Detailed Features 

• Polished stainless steel construction 
• 2-inch barrel 
• Fiber optic sights 
• Rubber grips 
• Also rated for .38 Special +P

Owners drawn to the SDR typically want a compact .357 Mag revolver for carry or backup use, and the polished stainless finish is a deliberate aesthetic choice that sets it apart from the matte market. Most report it is a sturdy little gun that handles both .357 Mag and .38 Special +P without issue, giving flexibility at the range and in the field.

The 2-inch barrel means recoil with full .357 Mag loads is sharp, and opinions split on whether rubber grips adequately manage it. Some owners find the grips comfortable, while others swap them out early for something with a longer grip panel to better control the muzzle rise. Fiber optic sights are appreciated for low-light visibility on a gun this size.

Diamondback's revolver line is relatively new compared to established competitors, and a portion of owners note they watched the first production runs before buying. Those who do buy generally report smooth cylinder lock-up and consistent double-action pull, though a few mention the trigger is heavier than they'd like and improves after regular dry-fire practice.