The North American Arms 50th Anniversary Mini-Revolver is a single-action .22 WMR rimfire revolver with a 1.63-inch barrel and a 5-round cylinder. It has an engraved stainless frame with black pearl grips, released as a limited edition commemorating NAA's 50th anniversary. 
 

Key Specifications 

• Brand: North American Arms 
• Model: NAA-22M-50B 
• Caliber: .22 WMR 
• Action: Single Action 
• Capacity: 5 rounds 
• Barrel Length: 1.63 inches 
• Color/Finish: Stainless with engraving 
• Grip: Black Pearl 
   

Detailed Features 

• 5-round cylinder chambered in .22 WMR 
• 1.63-inch barrel in a highly concealable mini format 
• Engraved stainless frame as part of the 50th Anniversary limited edition 
• Black pearl grips 
• Single-action only operation

Owners of the NAA Mini-Revolver 50th Anniversary edition tend to split between collectors and practical carry users. The engraved stainless finish and black pearl grips are the main draw for collectors, who describe the piece as an attractive limited edition rather than a pure utility firearm.

For those who carry the NAA-22M-50B as a deep-concealment or backup gun, the tiny frame is appreciated for fitting in places no other handgun will. The trade-off in .22 WMR is well understood by this crowd: they are not under any illusions about terminal performance and accept it as a last-resort option.

The single-action-only trigger and manual operation of the hammer-down safety draw mixed feedback from new owners who are unfamiliar with the Mini-Revolver's manual of arms. Experienced NAA owners find the system natural; first-timers often need a range session before they feel comfortable.