Kansas Gunshop is a Wichita, KS-based retailer specializing in firearms and accessories. The Davis DM-22 22 WMR Police Trade-in Derringer is a compact, two-shot firearm chambered in .22 WMR, offering a discreet option for personal defense. These police trade-ins represent a practical and economical choice. Available now for $189.00.
Reviewed by Derek, Owner & FFL Holder at Kansas Gunshop. Kansas-licensed FFL dealer since 2008, NRA Range Safety Officer.
Last updated: April 2026
What are the specifications of the Davis DM-22 22 WMR?
| Product Type | Derringer |
|---|---|
| Material | Zamak (Zinc Alloy) Frame, Steel Barrel/Components |
| Manufacturing | Davis Industries (defunct) |
| Finish | Chrome or Blued (may vary) |
| Hardness/Quality | Entry-level, functional for intended purpose |
| Compatibility | .22 WMR (Winchester Magnum Rimfire) ammunition |
| Installation/Usage | Single-action, break-open barrel loading |
| Weight | Approximately 9-10 oz (unloaded) |
| Dimensions | Approx. 4.5″ L x 3″ H x 0.9″ W |
| Country of Origin | USA |
| Condition | Police Trade-in (Used, Good to Very Good) |
| SKU | DM22-PT-WMR |
What are the key features of this derringer?
- .22 WMR Chambering: The .22 WMR cartridge offers more energy and velocity than a standard .22 LR, providing a more capable defensive round in a small package.
- Compact Size: With its diminutive dimensions, the Davis DM-22 is highly concealable, making it suitable for discreet carry in a pocket, ankle holster, or even a small purse.
- Police Trade-in Status: These units are former law enforcement inventory, indicating they have been maintained to a certain standard and are offered at a value price point. Expect some cosmetic wear consistent with service use.
- Simple Operation: The single-action, break-open design is straightforward to operate, with a manual extractor for spent casings.
- Affordable Personal Defense: For those seeking an inexpensive backup or last-ditch defensive firearm, this derringer presents a budget-friendly option.
- Lightweight Construction: The Zamak frame contributes to a very light overall weight, enhancing its carry comfort.
Who should consider buying the Davis DM-22 22 WMR Police Trade-in Derringer?
Buy it if:
- ✅ You need a highly concealable, ultra-compact backup firearm.
- ✅ You’re on a strict budget and need an economical personal defense option.
- ✅ You understand the limitations of a two-shot derringer and are looking for a last-ditch defensive tool.
- ✅ You appreciate the historical aspect of police trade-in firearms.
- ✅ You want a firearm that is simple to operate and maintain.
Skip it if:
- ❌ You require a high-capacity firearm for primary self-defense. Consider our semi-automatic pistols for more capacity.
- ❌ You expect a pristine, factory-new finish. These are trade-ins and will show wear.
- ❌ You are looking for a primary range gun or a firearm for extensive target practice.
- ❌ You prefer a firearm with modern safety features or a more robust construction than a Zamak frame. See our revolver selection for steel-frame options.
How does the Davis DM-22 compare to other compact firearms?
| Feature | Davis DM-22 22 WMR | “Generic .22LR Derringer” (e.g., older Cobra/Phoenix) | North American Arms (NAA) Mini-Revolver .22 WMR |
|---|---|---|---|
| Material | Zamak Frame, Steel Barrel | Zamak Frame, Steel Barrel | Stainless Steel |
| Quality | Functional, budget-tier | Entry-level, variable | Higher-tier, robust |
| Compatibility | .22 WMR | .22 LR (typically) | .22 WMR (convertible to .22 LR with extra cylinder) |
| Shipping | From Wichita, KS (Kansas Gunshop) | Varies by retailer | Varies by retailer |
| Lifespan/Durability | Good for occasional use, not heavy duty | Limited, may show wear quickly | Very durable, long lifespan |
| Price | $189.00 (Police Trade-in) | ~$60-80 (New) | ~$250-300 (New) |
The Davis DM-22 occupies a specific niche. It offers a step up in power from many .22LR derringers due to its .22 WMR chambering, while remaining significantly more affordable than premium stainless steel options like the NAA Mini-Revolver. Its trade-in status provides a cost-effective entry point into a concealable .22 WMR firearm, though you should expect the cosmetic wear that comes with previous service.
Frequently Asked Questions about Derringers
Is a .22 WMR derringer effective for self-defense?
While a .22 WMR derringer provides more energy than a .22 LR, its effectiveness for self-defense is limited by its low capacity (typically two rounds) and short barrel, which can reduce bullet velocity. It is generally considered a last-ditch, close-range defensive tool, not a primary defensive firearm. Shot placement is critical.
How do I load and unload a Davis DM-22 derringer?
The Davis DM-22 is a break-open design. To load, you typically pull down a latch (often on the left side of the frame) to pivot the barrel assembly downwards. This exposes the two chambers. Insert two .22 WMR cartridges. Close the barrel assembly until it latches securely. To unload, repeat the process and use the manual extractor to push out the spent casings or unfired rounds.
What kind of maintenance does a police trade-in derringer require?
Like any firearm, a police trade-in derringer requires regular cleaning and lubrication, especially after firing. Given its trade-in status, it’s advisable to perform a thorough cleaning and inspection upon receipt. Check for any worn parts, ensure the action is smooth, and keep moving parts lightly oiled. The Zamak frame should be kept clean and dry to prevent corrosion.
Are spare parts available for Davis derringers?
Davis Industries has been out of business for many years, which means factory spare parts are generally not available. Some aftermarket parts or components salvaged from other Davis firearms might be found, but they are not common. It’s important to consider this when purchasing an older, defunct brand firearm.
Where can I buy derringers online?
You can buy derringers online, including this Davis DM-22 22 WMR Police Trade-in Derringer, right here at Kansas Gunshop (kansas-gunshop.com). We offer a selection of firearms and handle FFL transfers in accordance with all federal and state laws.
Is the Davis DM-22 a single-action or double-action firearm?
The Davis DM-22 is a single-action derringer. This means that after loading, you must manually cock the hammer before each shot. The trigger then only releases the hammer. There is no double-action capability where pulling the trigger both cocks and releases the hammer.
What does “police trade-in” mean for a firearm’s condition?
“Police trade-in” means the firearm was previously owned and used by a law enforcement agency, then traded in for newer equipment. These firearms are typically functional, but will show varying degrees of cosmetic wear such as holster marks, scratches, and finish thinning. They are generally well-maintained mechanically, but not always. We inspect each one and grade them accordingly.
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