The North American Arms Companion is a single-action .22 caliber mini-revolver with a 5-round cylinder, stainless steel construction, and rosewood bird's head grips. It weighs 5 oz and measures 4 inches overall. 
 

Key Specifications 

• Caliber: .22 Caliber 
• Barrel Length: 1.13 inches 
• Capacity: 5 rounds 
• Weight: 5 oz. 
• Overall Length: 4 inches 
• Height: 2.38 inches 
• Width: 0.88 inches 
• Sights: Half-moon Sight 
• Action Type: Single Action 
• Grips: Rosewood Bird's Head 
   

Features 

At 5 oz and just under 4 inches long, this is one of the smallest production revolvers available. The stainless steel finish resists corrosion and holds up to daily carry. The bird's head grip profile is narrow, which aids concealment, and the rosewood gives it decent purchase despite the small frame. 
 
Single-action operation means manually cocking the hammer before each shot. The half-moon front sight is basic but workable for the short distances at which a .22 mini-revolver is realistically used. Five rounds load directly into the cylinder.

NAA Companion owners cover consistent ground in their feedback.

Portability is the defining feature. At 5 oz and 4 inches overall, it genuinely disappears in a pocket or as a backup on an ankle. The stainless steel build feels denser than the weight suggests, which owners take as a sign of solid construction.

The .22 caliber draws divided opinion. For plinking and casual range use, it is an inexpensive and low-recoil round well suited to the platform. As a defensive caliber it generates debate -- some owners are comfortable with it as a last-resort backup, others prefer carrying it purely for recreational shooting and would not rely on .22 for self-defense.

Accuracy at short range is generally fine; at extended distances results depend more on shooter skill than on the gun. The small grip size draws mixed comments -- most find it acceptable for occasional shooting, while a few note that extended sessions can be uncomfortable. Value is considered reasonable for what it is, though some comparisons put similarly-priced compact firearms ahead on practical capability.