The North American Arms Sidewinder is a single-action mini revolver chambered in .22 WMR with a .22 LR cylinder included. It has a 1.5-inch barrel, holds 5 rounds, and weighs 6.7 oz. The finish is matte stainless steel. Grips are rosewood birdshead. 
 

Key Specifications 

• Brand: North American Arms 
• Model Name: Sidewinder 
• UPC: 744253002540 
• Caliber: .22 WMR / .22 LR 
• Action Type: Single Action (SAO) 
• Capacity: 5 rounds 
• Barrel Length: 1.5 inches 
• Weight: 0.4 lbs (6.7 oz) 
• Finish: Matte Stainless Steel 
• Sights: Fixed Post Front Sight 
• Grip Material: Rosewood Birdshead 
   

Detailed Features 

 
The Sidewinder differs from standard NAA mini revolvers in its swing-out cylinder, which allows faster reloading than the traditional half-cock-and-pull method. Dual caliber capability. Switching between .22 WMR and .22 LR is a cylinder swap. At 6.7 oz and 1.5 inches of barrel, this is a backup or deep-concealment gun. The matte stainless holds up to pocket carry without corroding. 
 
Single-action only means you cock the hammer for each shot. The fixed front post sight is minimal, adequate for close-range use, not a precision target sight. Rosewood birdshead grips are an aesthetic choice and fill a small hand comfortably.

NAA Sidewinder owners are generally satisfied, with the usual trade-offs that come with a 6.7 oz single-action mini revolver.

The compact size is the main draw and people get what they expect, a tiny, genuinely concealable gun that fits in a pocket without printing. The stainless finish is appreciated for durability, and the rosewood grip gets compliments for aesthetics. The swing-out cylinder is consistently praised as a practical improvement over NAA's fixed-cylinder models for reloading speed.

Dual-caliber flexibility is a real advantage for owners who want to switch between cheaper .22 LR for practice and .22 WMR for carry.

The small size creates handling challenges for shooters with larger hands. The grip doesn't leave much to hold onto. Five rounds is the capacity, full stop, and buyers coming from semi-autos need to accept that before purchasing. Some new shooters find the .22 WMR recoil more noticeable than expected from such a small cartridge in such a light gun.

Bottom line: a niche tool for a specific use case. If you need something this small and light, the Sidewinder is one of the better options in the category.