The North American Arms Sidewinder Conversion is a compact single-action revolver chambered in .22 LR, also compatible with .22 WMR. Its stainless steel frame and cylinder hold up well to regular handling, and the folding holster grip is a practical touch that keeps the package pocket-friendly without requiring a separate holster. 
 

Key Specifications 

• Manufacturer: North American Arms 
• Model: Sidewinder Conversion 
• Type: Revolver 
• Caliber: .22 LR (also compatible with .22 WMR) 
• Barrel Length: 1.125 inches 
• Capacity: 5 rounds 
• Weight: 7.70 ounces 
• Frame Material: Stainless Steel 
• Finish Color: Stainless 
• Sights: Post Front 
• Hammer Style: Exposed 
• Condition: New in Box 
   

Features 

At 1.125 inches of barrel, the Sidewinder is about as short as a rimfire revolver gets. The folding grip is the defining feature here. It folds flat for carry and unfolds to give a usable hold when you need to fire. Single-action operation means you cock the hammer before each shot, which slows things down but gives you a deliberate trigger break. 
 
The stainless cylinder is removable for reloading, which is how NAA's mini revolvers work. There's no gate or ejector rod. It's a manual process, so this is not a gun for fast reloads.

The NAA Sidewinder draws consistent praise for its compact size and stainless construction. Owners who carry it as a backup or deep-concealment option tend to be satisfied. At 7.70 ounces and a 1.125-inch barrel, it disappears into a pocket. The folding holster grip gets mentioned as a genuinely useful design rather than a gimmick.

Criticism centers on two things: the small frame is difficult to grip for shooters with larger hands, and five rounds with a manual reloading process isn't much if you need quick follow-up shots. Trigger pull opinions split. Some find it manageable for deliberate slow fire, others find it heavier than they'd like. Most users frame it as a very specific-use tool rather than a primary carry gun, and those who buy it with that expectation in mind tend to be happy with it.