The Beretta 21A Bobcat Ghost Buster is a compact .22 LR semi-automatic pistol with an aluminum frame and a silver finish. At 14.5 oz, it's light enough for all-day carry, and the 2.9-inch barrel keeps the overall length to 5.4 inches. 
 

Key Specifications 

• Model: 21A Bobcat Ghost Buster 
• Caliber: .22 LR 
• Action: Semi-Automatic 
• Barrel Length: 2.9 inches 
• Capacity: 7 rounds (plus 1 in the chamber) 
• Finish: Silver 
• Weight: 0.9 lbs (14.5 oz) 
• Frame Material: Aluminum 
   
  The serrated slide gives a solid grip when racking, which can matter in a hurry or with wet hands. Operation is straightforward: load, rack, shoot. That simplicity is part of why this platform has been around as long as it has. 
   
  .22 LR means low recoil and inexpensive ammunition, which makes it practical for frequent practice. It handles target shooting, plinking, and small game hunting well. For self-defense it's a secondary option at best, and most users are clear-eyed about that.

The Bobcat Ghost Buster gets consistent praise for its size and ease of use. The compact aluminum frame makes it a natural pick for concealed carry or as a backup, and new shooters regularly mention it as approachable given the low recoil and simple operation.

The silver finish on the Ghost Buster variant gets positive attention for its looks, more distinctive than a standard matte black pistol.

On the critical side, feeding and ejection reliability comes up often enough to take seriously. Some owners report issues with specific ammunition brands, and the general advice is to test several types before settling on one. Build quality impressions vary: most find it solid for its class, but some have concerns about long-term wear given the aluminum construction and price point.

The .22 LR caliber draws predictable debate. For practice and plinking it's well-regarded; for serious self-defense use, opinions are divided. Sights are adequate for close-range work but won't satisfy anyone doing precision shooting.

Value perception is generally good within the .22 compact category, helped by the Beretta name, though a few buyers feel it's priced high relative to competitors offering similar features.