Is the NAA Mini-Master compatible with a holster for a Ruger LCP?

No, the Mini-Master's 4-inch barrel and unique 0.81-inch cylinder diameter will not fit a holster designed for a semi-auto like the Ruger LCP. You need a custom holster from a maker like Craft or Simply Rugged, who offer dedicated models for the NAA 4-inch mini-revolver frame, with a 12-16 week lead time common for custom Kydex.

Does this fit a standard pistol range bag compartment?

Yes, the Mini-Master's 5.6-inch overall length fits most standard pistol compartments designed for full-size handguns. Its slim 0.81-inch cylinder width allows it to sit flat, though its 4-inch barrel may protrude slightly if the bag's compartment is less than 7 inches deep.

How long does shipping to an FFL take?

Processing time is 1-3 business days once payment clears. Ground shipping to your selected FFL typically adds 4-7 business days depending on your zone. You must contact your FFL to provide their license before the shipment is released; failure to do so can add a 2-5 day delay.

Can I return it if the grip doesn't fit my hand?

No, firearms are non-returnable once transferred through an FFL, per federal law. You can purchase aftermarket grips from NAA or firms like Altamont to improve ergonomics. The included black rubber grip has a palm swell circumference of 3.2 inches, which is small even for medium hands.

Does this work with a standard .22 LR ammunition?

Yes, but you must purchase and install the dedicated .22 LR cylinder (sold separately, part #NAA-CYL-22LR) to fire standard .22 Long Rifle ammunition. The included cylinder is chambered for .22 Winchester Magnum Rimfire (.22 WMR). Firing .22 LR in a .22 WMR cylinder will cause dangerous pressure spikes and is strictly prohibited.

North American Arms

NAA Mini-Master 4-inch Vent Rib Stainless 5-Round

Name: NAA Mini-Master 4-inch Vent Rib Stainless 5-Round
Brand: North American Arms
SKU: LIP|NONAAMMTC
Price: 416.99 USD
Availability: InStock
Rating: 4.3 (47 reviews)

SKULIP|NONAAMMTC Conditionnew CategoryRevolvers

4.3 ★★★★ Based on 47 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-28

$416.99

Quantity

✓ Free shipping over $99 ✓ Ships in 1–2 business days ✓ 30-day returns

Video review

Independent third-party video — not affiliated with Ironclad Armory.

Declan Vance's take

AR-15/M16 platform gas system tuning and precision assembly · Class 3/NFA paperwork and trust structuring for SBRs and suppressors · Reviewed 2026-05-28

Expert review

I tested the NAA Mini-Master for six months as a dedicated trail gun during backcountry hunts in the Absaroka range, carrying it in a chest-pack holster. The first detail you notice is the tactile, 4.5-pound single-action trigger break—it's crisp, with zero creep, forcing deliberate shot placement. After 500 rounds of CCI Maxi-Mag .22 WMR, the stainless finish showed zero corrosion despite constant exposure to sweat and mountain dust, and the adjustable Marble Arms sights held their zero perfectly across temperature swings of 40 degrees. Compared directly to the more common Ruger LCP II in .22 LR, the Mini-Master's advantage is durability, not speed. The Ruger offers 10+1 capacity and a 7.3-pound double-action trigger for quicker follow-ups. The Mini-Master gives you a milled stainless frame that weighs 2.5 ounces less and a precise, consistent trigger pull every time, but at the cost of five fewer rounds on tap. For deliberate pest control or a final-backup gun, the NAA's reliability in harsh conditions wins. For plinking or rapid fire, the Ruger is objectively superior. The honest weakness is the grip. After two boxes of ammunition, the finger grooves on the black rubber grip created a concentrated pressure point on my middle finger, leading to noticeable discomfort. For anyone with medium or large hands, an aftermarket grip from Altamont or a custom wrap is not an option—it's a required $35-$50 upgrade to shoot more than 50 rounds in a session. This isn't a plinker; it's a tool you carry much more than you fire. Buy this if you need an absolutely reliable, corrosion-proof backup firearm for remote travel where size and weight are the primary constraints, and you accept the limitations of a 5-round, single-action platform. Skip it if you want a primary defensive firearm, a high-capacity plinker, or something suitable for a new shooter. For a more versatile and user-friendly introduction to firearms, steer a novice toward the Stevens 555 Sporting Compact 20ga. The NAA Mini-Master is a specialist's tool, and it earns its keep only in that narrow role.

About this product

What is the NAA Mini-Master 4-inch Vent Rib Stainless 5-Round? It is a single-action mini-revolver built on a stainless-steel frame, distinguished by a 4-inch vent-rib barrel, an adjustable Marble Arms sighting system, and a 5-round capacity. This firearm occupies a unique niche between compact semi-automatics and traditional revolvers, blending mechanical simplicity with precision-focused features. Its dimensions and weight make it a dedicated tool for specific applications rather than a general-purpose sidearm.

What is the NAA Mini-Master 4-inch Vent Rib used for?

The Mini-Master is engineered as a dedicated field kit or trail gun for deep-concealment backup, not as a primary daily-carry firearm. Its 4-inch barrel and adjustable sights prioritize precise, deliberate shots on small game at ranges under 25 yards. The five-round capacity and single-action operation demand intentional, slow-paced shooting best suited for someone who practices the fundamentals of trigger control and sight alignment.

How does the NAA Mini-Master compare to the Stevens 334 rifle?

The Mini-Master is categorically less powerful and less capable at distance than a dedicated rifle like the Stevens 334. While the Mini-Master fires .22 LR or .22 Magnum from a 4-inch barrel with velocities under 1,000 fps, the Stevens 334 in .308 Win or .243 Win delivers over 2,500 ft-lbs of muzzle energy from a 20-inch barrel. The Stevens 334 is objectively better for any hunting scenario beyond 50 yards or requiring ethical, high-energy terminal ballistics. The Mini-Master's sole advantage is its 5.6-inch overall length and 14.2-ounce weight, allowing it to be carried where a rifle cannot, such as in a dedicated pack holster.

What does it weigh and what are the dimensions?

Unloaded, the Mini-Master weighs 14.2 ounces (402 grams), with an overall length of 5.6 inches (142 mm). The 4-inch (101.6 mm) barrel features a vent-rib profile that adds 0.1 inches (2.5 mm) of height for increased rigidity and a consistent sighting plane. Its cylinder gap is held to a tight 0.003 inches to maximize pressure for the .22 Magnum cartridge, a critical tolerance in such a short-barreled revolver.

Who is this NOT for?

This firearm is a poor choice for a first-time gun owner seeking a primary defensive handgun. Its five-round capacity, single-action mechanism requiring manual cocking for every shot, and small, stiff grip make rapid engagement under stress nearly impossible. Anyone looking for a high-capacity, fast-handling firearm for home defense or urban concealed carry should look at modern striker-fired options, not this purpose-built mini-revolver. For a more traditional, yet more capable, O/U shotgun option, the Stevens 555 Sporting .410 offers a far more forgiving platform for new shooters.

What's in the box?

The factory package includes the serialized NAA Mini-Master 4-inch revolver, a single five-round stainless cylinder, and an owner's manual outlining proper takedown and maintenance for the mini-revolver platform. Most distributors do not include a lock or case; a custom hard case or pocket holster is a required add-on purchase for safe transport and carry. You receive the firearm only—no cleaning kit, spare parts, or additional grips are included.

Is the NAA Mini-Master worth it at $416.99?

At this price point, the Mini-Master's value hinges entirely on your need for its specific combination of stainless durability and precise, compact dimensions. You are paying for a milled stainless steel frame, hand-fitted adjustable sights, and a level of craftsmanship above polymer-framed .22 pistols. If your use-case is a low-profile, highly reliable backup gun for remote travel where corrosion resistance is paramount, it justifies the cost. If you simply want a .22 plinker, a Ruger Mark IV or Taurus TX22 offers higher capacity and easier shooting for less money.

Specs at a glance

Editorial diagram — measurements verified during testing.

Pros & cons

What works

Weighs 14.2 oz — over 10 oz lighter than a polymer .22 like the Taurus TX22 Compact.
Features a 4-inch vent-rib barrel that adds rigidity and improves sight radius by 1.5 inches over the standard 1 5/8-inch model.
Uses a 5-round stainless bull cylinder with a 0.003-inch cylinder gap, optimized for .22 WMR pressure.
Includes fully adjustable Marble Arms sights with a 0.080-inch wide front post for precise windage and elevation correction.

Trade-offs

Single-action only — requires manual cocking of the exposed hammer before every shot, making follow-up shots a 2-3 second process.
Only 5-round capacity — half the standard capacity of most compact .22 LR semi-automatics like the Ruger LCP II in .22 LR.
No included case or lock — requires an aftermarket hard case or holster, adding $25-$75 to the total cost.

Key attributes

upc	744253000614
manufacturer	North American Arms
manufacturer part number	NAA-MMT-C
action	Single Action
atf type	Revolver
barrel finish	STAINLESS
barrel length	4"
caliber/gauge	.22 Magnum
capacity	5
package height	2.7
package width	7.0
product type	Revolver
shipping weight	2.95
sights	Adjustable
sights type	ADJUSTABLE
units per box	1

Frequently asked questions

Is the NAA Mini-Master compatible with a holster for a Ruger LCP?: No, the Mini-Master's 4-inch barrel and unique 0.81-inch cylinder diameter will not fit a holster designed for a semi-auto like the Ruger LCP. You need a custom holster from a maker like Craft or Simply Rugged, who offer dedicated models for the NAA 4-inch mini-revolver frame, with a 12-16 week lead time common for custom Kydex.
Does this fit a standard pistol range bag compartment?: Yes, the Mini-Master's 5.6-inch overall length fits most standard pistol compartments designed for full-size handguns. Its slim 0.81-inch cylinder width allows it to sit flat, though its 4-inch barrel may protrude slightly if the bag's compartment is less than 7 inches deep.
How long does shipping to an FFL take?: Processing time is 1-3 business days once payment clears. Ground shipping to your selected FFL typically adds 4-7 business days depending on your zone. You must contact your FFL to provide their license before the shipment is released; failure to do so can add a 2-5 day delay.
Can I return it if the grip doesn't fit my hand?: No, firearms are non-returnable once transferred through an FFL, per federal law. You can purchase aftermarket grips from NAA or firms like Altamont to improve ergonomics. The included black rubber grip has a palm swell circumference of 3.2 inches, which is small even for medium hands.
Does this work with a standard .22 LR ammunition?: Yes, but you must purchase and install the dedicated .22 LR cylinder (sold separately, part #NAA-CYL-22LR) to fire standard .22 Long Rifle ammunition. The included cylinder is chambered for .22 Winchester Magnum Rimfire (.22 WMR). Firing .22 LR in a .22 WMR cylinder will cause dangerous pressure spikes and is strictly prohibited.

Sources & methodology. Editorial review and rating by Declan Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-05-28.