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The Walther WMP (Magnum Pistol) is Walther's take on what a purpose-built .22 WMR semi-auto pistol should look like in the modern era. This is not a scaled-down target gun or a rimfire novelty. It has the footprint and feel of a full-size duty pistol, with a machined aluminum slide, polymer frame, and a Picatinny accessory rail up front. The 4.5-inch stainless steel barrel gives you solid velocity out of the .22 WMR cartridge, and the whole package weighs in at 27.8 ounces with an empty mag.
The standout feature on the WMP is the Quad Release, Walther's patented ambidextrous magazine release system. It gives you four activation points total, combining both paddle-style and push-button releases on each side of the pistol. That is genuinely useful for left-handed shooters and anyone who trains for speed reloads, not just a marketing checkbox. The slide stop is also fully ambidextrous, and the aggressive grip texture (Walther calls it Superterrain) keeps things locked in your hand without being uncomfortable after a long session.
The slide on this specific model (MPN 5220302) is cut for optics out of the box. Two optic adapter plates are included, covering popular footprints like RMR and Shield/Doctor-style red dots. The factory iron sights are a 3-dot setup with a fiber optic front that picks up light well. Whether you mount a dot right away or run it stock for a while, you have options. The performance duty trigger runs with an integrated trigger safety and pulls at around 4.5 pounds.
On the range, the .22 WMR cartridge produces noticeably more noise and muzzle flash than .22 LR, but the recoil impulse stays genuinely soft. That makes it a fantastic choice for high-volume range days, anyone who is recoil-sensitive, or people building fundamentals without the flinch that comes with centerfire pistols. It also makes a solid outdoor companion for ranch or farm use, and the .22 WMR flat-shooting trajectory is perfectly suited for varmint and pest control at realistic pistol distances.
This version ships with two 10-round magazines. Field stripping is simple and tool-free, keeping maintenance easy no matter where you are.
The standard WMP ships with two 15-round magazines, while the 5220302 version comes with two 10-round magazines. The barrel length on this version is 4.5 inches. Everything else, including the Quad Release system, optics-ready slide, and overall ergonomics, is the same across the lineup.
The WMP's slide is cut to accept a red dot optic and two adapter plates are included in the box. The plates cover popular footprints including Trijicon RMR and Shield/Doctor-style optics, so you can get a dot mounted without purchasing additional hardware for most common choices.
Yes, it is one of the better options in this category. The .22 WMR cartridge produces dramatically less felt recoil than any centerfire pistol caliber, and the aluminum slide and overall weight of the WMP manage that impulse well. People who struggle to cycle a 9mm slide or who find centerfire recoil difficult to manage will notice a significant difference with the WMP.
The Quad Release is Walther's patented magazine release that gives you four total activation points. There is both a paddle-style and a button-style release on each side of the pistol, so left- and right-handed users can both work the mag release in the way that feels most natural to them. It is a genuinely ambidextrous system, not just a reversible one.
The .22 WMR cartridge is well suited for this purpose. It offers higher velocity and a flatter trajectory than .22 LR, making it effective on small pests and varmints at typical pistol ranges. The WMP is a practical field gun, and the Picatinny rail up front gives you the option to add a light if needed.
The WMP runs best with quality .22 WMR ammunition from reputable manufacturers. Walther has published a list of recommended loads tested in the WMP, and sticking to those is a good idea. Like most rimfire pistols, it can be picky about budget or low-powered ammo, so avoiding the cheapest loads available will help keep reliability high.
| UPC | 723364224652 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 5220302 |
| Action | |
| ATF Type | Pistol |
| Barrel Length | 4.5" |
| Caliber/Gauge | .22 WMR |
| Capacity | 10 |
| Color | Black |
| Length | 11.6500 |
| Model | |
| Number of Magazines | 2 |
| Package Height | 3.0 |
| Package Width | 9.0 |
| Product Type | Double Action Only |
| Shipping Weight | 3.3 |
| Sights | 3-Dot |
| Sights Type | 3-Dot |
| Slide Description | Optic Ready/Serrated |
| State Restriction (OR) | NO SALE TO OREGON |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
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