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There aren't many semi-auto pistols chambered in .22 WMR, and there's a good reason for that. The cartridge sits in an awkward engineering space — too powerful for a standard blowback action, not powerful enough for a conventional locked-breech system. Walther's solution was a purpose-built delayed blowback design with a fluted chamber, which allows the case to expand slightly into the chamber grooves on firing and slow the slide's rearward travel. It's genuinely clever engineering, and it's what makes the WMP run where others have stumbled. The result is a pistol that recoils about like a .22 LR despite launching rounds with significantly more velocity and energy.
The aluminum slide is machined from 7075 aluminum, which keeps the weight down without sacrificing durability. It's milled from the factory with a mounting footprint for both Trijicon RMR and Shield/Doctor-style optics, and Walther throws in adapter plates and a cover plate so you're covered either way. The fiber optic front sight pairs with a serrated rear and the pistol also ships with a second, shorter rear sight to let you dial in point of impact. Up front on the frame is a full-length Picatinny accessory rail, and the aggressive grip texture strikes a good balance between secure and comfortable during long range sessions.
One of the more interesting features on the WMP is what Walther calls the Quad Release. It's a first-of-its-kind patented ambidextrous magazine release that combines both a paddle-style and a button-style release, with four total activation points across both sides of the frame. Whether you're right-handed, left-handed, or just have a strong preference for how you drop a mag, there's an option that works for you. The ambidextrous slide stop is similarly easy to manipulate from either side.
The WMP runs best with 40- to 45-grain loads from brands like CCI, Fiocchi, Federal, and Hornady, and Walther maintains an ammunition recommendation list on their website worth checking before your first range trip. The trigger breaks cleanly at around 4.5 lbs and the flat-faced design gives it a feel that's closer to a striker-fired pistol than a traditional double action. This two-tone version pairs the black polymer frame with the silver aluminum slide for a look that's easy to spot on the bench.
The WMP is most reliable with 40- to 45-grain loads, and Walther specifically lists CCI, Fiocchi, Federal, and Hornady as tested brands on their website. Lighter loads in the 30-grain range tend to cause more feeding issues due to lower operating pressure. It's worth running a box or two of your preferred load before taking the gun afield, which is good practice with any rimfire semi-auto.
The WMP's slide is milled from the factory and ships with adapter plates for both Trijicon RMR and Shield/Doctor-style footprints, which covers the majority of popular micro red dots on the market. A cover plate is also included if you want to keep the iron sights and leave the cut protected. No additional milling or gunsmithing is needed.
Walther intentionally built the WMP to full-size duty pistol dimensions rather than scaling it down to match the cartridge. The larger frame accommodates the longer .22 WMR case in a staggered-column magazine and gives more room for the delayed blowback operating system. The upside is a longer sight radius, better grip for a wider range of hand sizes, and a pistol that handles more like a centerfire than a plinker.
The Quad Release is Walther's patented ambidextrous magazine release system that combines both a paddle-style release and a button-style release on each side of the frame, giving you four total activation points. This lets right- and left-handed shooters both release the magazine naturally without adjusting their grip. It's a genuinely useful feature that's unique to the WMP platform.
Yes — the aluminum slide is relatively lightweight and the recoil spring is tuned for the .22 WMR's operating pressures, so it requires noticeably less effort to cycle than most centerfire pistols. This makes it a solid option for anyone who has difficulty manipulating the slide on a 9mm. The superterrain cocking serrations on both the front and rear of the slide also give you plenty of grip surface.
The WMP is a versatile pistol that fits a few different niches well. It's a great range gun for anyone who wants more punch than .22 LR without the recoil of a centerfire. It's also a capable small-game and varmint pistol, useful for ranch or farm work where you need to dispatch pests out to moderate distances. The .22 WMR cartridge delivers more energy and range than .22 LR while keeping muzzle rise and noise manageable.
| UPC | 723364232787 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 5220306 |
| Action | |
| Barrel Finish | STAINLESS |
| Barrel Length | 4.5" |
| Caliber/Gauge | .22 Magnum |
| Capacity | 15 |
| Color | Black |
| Length | 11.6500 |
| Number of Magazines | 2 |
| Product Type | Double Action Only |
| Shipping Weight | 3.3 |
| Sights | Fiber Optic Front/Serrated Rear |
| Sights Type | ADJUSTABLE |
| Slide Description | 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 |
| ATF Type | Pistol |
| Model | |
| Package Height | 2.9 |
| Package Width | 8.8 |
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