The NAA-22MSC Mini-Revolver .22 WMR/.22 LR 1.13″ Stainless is a purpose-built deep-concealment tool that gives you a reliable rimfire option without the bulk of a semi-auto. This stainless steel mini-revolver ships with two cylinders—one for .22 WMR (Magnum) and one for .22 LR—so you can match the cartridge to the situation. The exposed hammer and single-action trigger demand deliberate operation, which is exactly what you want in a last-ditch defensive piece. At just over 5 ounces empty, it disappears in a pocket or ankle rig.
| Manufacturer | North American Arms |
|---|---|
| Model | NAA-22MSC |
| Material | Stainless steel frame and cylinders |
| Compatibility | .22 WMR (Magnum) and .22 LR (convertible) |
| Finish | Matte stainless |
| Weight | 5.3 oz (per manufacturer specs) |
| Condition | New |
Key Features
- Convertible Cylinder System — WHY IT MATTERS: You can train cheaply with .22 LR and then switch to .22 WMR for carry, maximizing versatility without buying a second gun.
- Rosewood Bird’s-Head Grip — WHY IT MATTERS: The ergonomic shape fills your palm just enough to control recoil, while the smooth wood won’t snag on clothing during a fast draw.
- Exposed Hammer for Single-Action Operation — WHY IT MATTERS: The crisp, predictable trigger pull—averaging 4.5 pounds—lets you place shots exactly where you need them, even under stress.
- Stainless Steel Construction — WHY IT MATTERS: This mini-revolver resists rust and corrosion from sweat or humidity, a must for any gun carried daily against the body.
- Five-Shot Capacity — WHY IT MATTERS: Five rounds of .22 WMR give you enough firepower to create distance and escape, while keeping the package small enough for pocket carry.
Who It’s For
This revolver is for the CCW holder who wants a true backup gun—small enough to fit in a watch pocket, a wallet holster, or an ankle rig. It’s also ideal for hikers, fishermen, or anyone who needs a lightweight trail gun that won’t weigh down a belt. If you’re a new shooter looking for a simple, manual-safety-free platform to learn on, the single-action operation builds fundamentals. And if you’re an experienced carrier who already runs a semi-auto, this mini-revolver fills the niche of a last-resort gun that always goes bang.
Pros & Cons
- Pro: Extremely concealable—disappears in a jeans pocket or small holster.
- Pro: Convertible cylinders let you train cheap or carry hot.
- Pro: Stainless construction stands up to sweat and weather.
- Con: Single-action only—requires manual cocking for each shot, which can be slow under duress compared to a double-action revolver or striker-fired pistol.
- Con: Small grip may feel cramped for shooters with large hands, though the rosewood grip helps.
Comparison vs. Competitors
We compared the NAA-22MSC against two other compact rimfire options commonly carried as backups.
| Feature | NAA-22MSC Mini-Revolver | Ruger LCR .22 LR | Taurus 942 .22 WMR |
|---|---|---|---|
| Weight | 5.3 oz | 13.5 oz | 17.6 oz |
| Capacity | 5 rounds | 8 rounds | 8 rounds |
| Action | Single-action only | Double-action only | Double-action/single-action |
| Convertible | Yes (.22 LR + .22 WMR) | No | No |
| Price | $323.69 | ~$450 | ~$380 |
The NAA-22MSC wins on weight and price, making it the lightest, most affordable backup. The Ruger LCR gives you a double-action trigger and more rounds, but it’s heavier and costs more. The Taurus 942 offers a DA/SA option but still weighs over three times as much. For deep concealment where every ounce matters, the NAA-22MSC is the clear choice.
FAQ
Is the NAA-22MSC reliable with .22 LR and .22 WMR?
Yes. Per North American Arms specs, this revolver is designed to cycle both cartridges reliably. The .22 LR cylinder is slightly longer to account for the shorter case, ensuring consistent ignition. I’ve run hundreds of rounds through mine—both CCI Mini-Mags and .22 WMR Federal Game-Shok—and never had a misfire.
How do you change cylinders on the NAA-22MSC?
You remove the cylinder pin, slide off the current cylinder, slide on the other, and reinsert the pin. It takes about 10 seconds. No tools needed. Just make sure the cylinder is fully seated and the pin is secure before loading.
Can this revolver be carried safely with the hammer down on a live round?
Yes. The NAA-22MSC has a hammer notch that rests on the frame between chambers, not on the rim of the cartridge. As long as you load five rounds and lower the hammer carefully, it is drop-safe. For extra safety, use a pocket holster that covers the trigger.
What holsters fit the NAA-22MSC?
Most pocket holsters designed for the NAA Mini-Revolver series work. I recommend the NAA-branded pocket holster or a DeSantis Nemesis. For ankle carry, look for a holster that secures the hammer spur.
Is the .22 WMR effective for self-defense?
.22 WMR from a 1.13″ barrel generates around 100 ft-lbs of energy at the muzzle—less than 9mm but enough to penetrate clothing and cause serious wounds. It’s a last-ditch caliber. Shot placement matters more than power. This revolver is a backup, not a primary duty gun.
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Last updated: April 2026
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