The North American Arms Mini-Master is a single-action revolver chambered in .22 LR with a 4-inch barrel, 5-round capacity, and stainless steel construction. At 10.8 oz and 7.88 inches overall, it's compact and light. 
 

Key Specifications 

• Model: Mini-Master 
• Manufacturer: North American Arms 
• Action Type: Single Action Revolver 
• Caliber: .22 LR 
• Capacity: 5 rounds 
• Barrel Length: 4 inches 
• Overall Length: 7.88 inches 
• Height: 3.69 inches 
• Width: 1 inch 
• Weight: 10.8 oz. 
• Sights: Adjustable Marble Arms front & rear sights 
• Grips: Oversized Rubber Grip 
• Finish: Stainless Steel 
• Condition: New in Box 
   

Features 

 
The single-action trigger requires manually cocking the hammer before each shot, which slows the rate of fire compared to double-action revolvers but gives a lighter, more consistent pull - useful for accurate target shooting. Adjustable Marble Arms sights are a step up from the fixed sights on standard NAA mini revolvers and allow you to zero the gun properly. 
 
The oversized rubber grip gives you more to hold onto than the standard factory grips, which helps with control at 10.8 oz. Stainless steel construction handles moisture exposure well. Five-round capacity is the standard for this frame size. 
 

Usage 

 
Fits shooters who want an extremely compact .22 LR revolver for backup carry, recreational shooting, or small game hunting at close range. The adjustable sights and 4-inch barrel make it more capable for target work than the shorter-barreled Mini variants.

Mini-Master owners generally focus on the size-to-capability trade-off.

The compact, lightweight build and stainless steel construction get consistent praise. The adjustable Marble Arms sights are specifically highlighted as a meaningful upgrade for owners who plan to do any kind of precision shooting. At close range, accuracy is generally reported as good for a .22 LR revolver of this size. The .22 LR ammo cost is low, which makes range practice affordable.

The limitations are inherent to the design: five rounds requires frequent reloading, the single-action trigger means slower follow-up shots, and the heavy trigger pull is a common complaint for some users. Small size also makes it harder to shoot accurately at longer distances. These are the expected trade-offs for the platform.