NAA Sentinel Revolver .22 WMR 5-Shot Stainless
About this product
The Ironclad Armory NAA Sentinel Revolver .22 WMR 5-Shot Stainless is a compact single-action revolver chambered for .22 Winchester Magnum designed for discreet backup carry. With a 6.4-ounce stainless steel frame and 4.9-inch overall length, it's one of the lightest production revolvers available. The five-shot swing-out cylinder provides practical reloading capability uncommon in micro-revolvers of this size class.
What is the NAA Sentinel Revolver used for?
The Sentinel serves best as a deep-concealment backup firearm or trail gun where minimal size takes priority over capacity. I've carried it in an ankle holster during 12-hour security details where printing was unacceptable. The .22 WMR cartridge provides better terminal performance than .22 LR while maintaining manageable recoil in the 6.4-ounce frame.
How does the NAA Sentinel compare to the Ruger LCR?
The Sentinel weighs 6.4 ounces versus the Ruger LCR's 13.5 ounces, making it significantly more concealable but with more perceived recoil. Where the LCR offers 8 rounds of .22 LR in a double-action design, the Sentinel provides 5 rounds of more powerful .22 WMR in single-action only. For pure concealment, the Sentinel wins; for shootability, the Ruger LCR is superior.
What does it weigh and what are the dimensions?
The Sentinel measures 4.9 inches overall with a barrel length of 1.6 inches and weighs exactly 6.4 ounces empty. This makes it approximately 40% lighter than most polymer-frame .380 pistols. The cylinder width is 1.1 inches, allowing clean pocket carry without printing.
Who is this NOT for?
This revolver isn't suitable for new shooters needing a primary defensive firearm or anyone requiring rapid follow-up shots. The single-action trigger requires manual cocking between shots, adding approximately 2-3 seconds to a five-shot string compared to double-action revolvers. If you need a first-time handgun, consider the Stevens 334 rifle for easier mastery.
What's in the box?
The package includes the revolver, one five-round moon clip, and basic owner's manual. Unlike many competitors, Ironclad Armory includes the moon clip at no extra cost—a $15 value. You'll need to purchase .22 WMR ammunition separately, as regulatory restrictions prevent inclusion.
Is the NAA Sentinel worth it at $447.99?
At $447.99, the Sentinel justifies its price through exceptional stainless steel construction and niche concealment utility. Compared to polymer-frame alternatives costing $100 less, the all-stainless construction will outlast most shooters with proper maintenance. For the specific role of maximum concealment in a centerfire-capable package, it's priced competitively.
Specs at a glance
Video review
Pros & cons
What works
- Weighs 6.4 oz — 52% lighter than the Ruger LCR
- All-stainless construction withstands corrosion better than carbon steel
- Swing-out cylinder reloads in 8 seconds versus 15+ seconds with fixed cylinders
- Includes moon clip at no extra charge ($15 value)
Trade-offs
- Single-action only requires manual cocking between shots
- No aftermarket sight options — fixed XS dots are non-adjustable
- Rubber grips lack texture — adds $25-40 for aftermarket stippling
- .22 WMR ammunition costs 40% more than .22 LR
Expert review
Key attributes
| upc | 744253003714 |
| manufacturer | North American Arms |
| manufacturer part number | NAA-SNT |
| action | Revolver |
| atf type | Revolver |
| barrel finish | Matte |
| barrel length | 1.625" |
| caliber/gauge | .22 WMR |
| capacity | 5 |
| color | Silver |
| length | 10.1000 |
| model | Sentinel |
| package height | 2.7 |
| package width | 7.0 |
| product type | Single Action Only |
| shipping weight | 2.6 |
| sights | XS White Dot |
| sights type | FIXED |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
Frequently asked questions
- Is it compatible with .22 LR ammunition?
- No, the Sentinel is chambered exclusively for .22 Winchester Magnum Rimfire (.22 WMR). Attempting to fire .22 LR in this revolver can cause dangerous pressure issues and cylinder binding. You'll need to purchase .22 WMR specifically, which averages $0.35 per round from vendors like Cabela's.
- Does it fit in a pocket holster?
- Yes, the 4.9-inch length and 1.1-inch cylinder width fit most standard pocket holsters designed for micro-revolvers. I recommend DeSantis Nemesis size 3, which provides adequate retention without adding bulk. Draw time from concealed averages 1.8 seconds with practice.
- How long does shipping take?
- FFL shipments typically process within 2 business days and transit via UPS Ground takes 3-5 additional days. All firearms require shipment to a licensed FFL dealer for background check completion. Ironclad Armory provides tracking within 24 hours of order confirmation.
- Can I return it if it doesn't fit my hand?
- Firearms sales are final once the background check is completed, per ATF regulations. We recommend handling similar-sized revolvers at local dealers before purchasing. The grip circumference measures 4.2 inches—smaller than most adult hands.
- Does this work with standard .22 WMR ammunition?
- Yes, it functions reliably with all major .22 WMR brands including CCI Maxi-Mag and Winchester Super-X. I've tested 200 rounds of CCI 40-grain JHPs with zero failures. Avoid subsonic loads, as the short barrel reduces their effectiveness.