Description
North American Arms made its name building revolvers small enough to hide in a coin pocket, and the Mini-Master is what happens when they build one you can genuinely shoot well. It rides on the same .22 Magnum frame as the rest of the mini lineup, but the 4 inch heavy vent rib barrel, bull cylinder, and oversized finger-grooved rubber grip turn it into a proper little shooter. Owners have taken to calling it the pocket sniper, and once you feel how naturally it points, the nickname makes sense. The Marble Arms fixed sights sit low on that flat rib, and the extra sight radius does wonders compared to the 1 inch barreled minis.
Two Cylinders, One Mini-Master
This is the combo model, which means you get both cylinders in the box. Run cheap .22 LR all afternoon at the range, then swap to the .22 WMR cylinder when you want more pop for the trail or the tackle box. Cylinder swaps take seconds, just pull the base pin and drop the other one in. Buying the combo up front is the smart move, since adding a cylinder later means sending the gun back to NAA for fitting.
Built Like Every NAA Mini
The whole gun is stainless steel, so sweat, rain, and pocket lint won't bother it. The single action mechanism is about as simple and reliable as a firearm gets, and NAA's halfway notch cylinder lets you carry all five chambers loaded with the hammer resting safely between rounds. Despite the beefed up barrel and bull cylinder, the whole package weighs just 10.7 ounces and runs 7.8 inches end to end.
Why the Mini-Master Earns a Spot
This is the NAA mini for people who want more than a get-off-me gun. It works as a kit gun, a trap line companion, a hiking sidearm, or just a seriously fun plinker that costs almost nothing to feed. Small enough to forget you're carrying it, accurate enough that you'll want to shoot it anyway.
Key Specifications
- Manufacturer: North American Arms
- Model: Mini-Master Combo
- MPN: NAA-MMC
- UPC: 744253000553
- Caliber: .22 WMR / .22 LR (convertible cylinders)
- Action: Single Action
- Capacity: 5 Rounds
- Barrel Length: 4" Heavy Vent Rib
- Overall Length: 7.8"
- Weight: 10.7 oz
- Frame: Stainless Steel
- Finish: Stainless
- Sights: Marble Arms Fixed
- Grips: Oversized Finger-Grooved Black Rubber
- Safety: Halfway Notch Safety Cylinder
What’s Included
- NAA Mini-Master revolver with .22 WMR cylinder
- .22 LR conversion cylinder
- Lockable hard case
- Owner's manual
Frequently Asked Questions
Does the Mini-Master combo really come with both cylinders?
Yes, this model (NAA-MMC) ships with the .22 WMR cylinder installed plus a fitted .22 LR conversion cylinder. Swapping between them only takes a few seconds by removing the base pin. If you buy a single-caliber version instead, adding a cylinder later requires sending the revolver back to NAA for fitting, so the combo saves you the hassle.
Is the NAA Mini-Master safe to carry fully loaded?
It is. NAA's cylinders have halfway notches machined between the chambers, so you can rest the hammer in a notch with all five rounds loaded. That keeps the hammer completely off any live round, which is a big step up from old-school single actions that had to be carried with an empty chamber.
How accurate is a revolver this small?
Better than you'd expect. The 4 inch barrel gives the Mini-Master a real sight radius, and the flat vent rib with Marble Arms fixed sights makes it point naturally. Owners regularly report it shoots well enough at close range for small game, pest control, and tin can duty, which is why some call it the pocket sniper.
How does the Mini-Master compare to the NAA Black Widow?
They share the same .22 Magnum frame, bull cylinder, and oversized rubber grip. The main difference is the barrel, with the Mini-Master running 4 inches versus the Black Widow's 2 inches. The longer tube adds under two ounces but noticeably improves sight radius and velocity, making the Mini-Master the easier of the two to shoot well.





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