The Bersa Thunder 22 is a compact double/single-action semi-automatic pistol chambered in .22 LR. Its aluminum alloy frame with nickel finish and black polymer grips give it the duo-tone appearance the model is known for. 
 

Key Specifications 

• Manufacturer: Bersa 
• Model: Thunder 22 
• Action: Semi-Automatic (Double/Single Action) 
• Caliber: .22 LR 
• Barrel Length: 3.5 inches 
• Capacity: 10 rounds 
• Weight: 1.7 lbs (19.8 oz) 
• Frame Material: Aluminum Alloy with Nickel finish 
• Grip Material: Black Polymer 
• Sights: Fixed 3-Dot Sight System 
   

Features 

The double/single-action mechanism lets you fire the first round double-action from a decocked hammer or cock manually for a lighter single-action pull on subsequent shots. The threaded barrel supports suppressor attachment, which suits .22 LR's naturally subsonic potential. Fixed 3-dot sights are adequate for the distances this pistol is typically used at. An integrated manual locking system and firing pin safety are the primary active safety features. 
 
At 19.8 oz with a 3.5-inch barrel, the Thunder 22 is compact and light. The .22 LR caliber keeps ammunition costs down and recoil minimal, which makes it practical for high-volume practice. MSRP is $307.

The Thunder 22 is most commonly discussed as a range trainer and beginner-friendly pistol. Low recoil and affordable .22 LR ammunition are the primary draws, and most owners use it for regular practice rather than carry. The lightweight aluminum frame and compact size are mentioned positively in this context.

The duo-tone nickel and black finish is noted as visually appealing and holds up reasonably well to range use.

Reliability feedback is the main area where users diverge. A portion of owners report occasional failures to feed, particularly with certain ammunition brands. These are not universal, but frequent enough to be a consistent thread in user discussions. Most suggestions point toward ammunition selection as a partial fix.

Trigger pull in double-action is described as heavier than some users prefer, which can affect first-shot accuracy until the shooter adjusts. Single-action pull on follow-up shots is less of a complaint.

Overall the Thunder 22 is regarded as a reasonable value for casual shooting and skill-building, with the caveat that ammunition sensitivity may require some testing.