Walther WMP .22 Magnum
Model: 5220300
Walther WMP .22 Magnum
Model: 5220300
Full Specifications
About This Firearm
The Walther WMP is the German-made .22 Magnum semi-auto built in the modern fighting-pistol form factor. At 27.8 oz with a polymer frame, steel slide, 15+1 capacity, and a 4.5" barrel, it looks and handles much closer to a Walther PDP than to a rimfire plinker. The grip ergonomics carry over from Walther's centerfire line — owners consistently report the WMP feels like a "real" pistol scaled to a rimfire cartridge rather than a novelty.
Two things define this gun. First, the German fit and finish: tight slide-to-frame tolerances, smooth slide cycling, and a refined trigger pull that owners and reviewers consistently rate well above the Kel-Tec PMR-30. The optic-ready slide includes adapter plates for Trijicon RMR, Holosun K, Docter, and similar low-profile red dots. The fiber-optic front sight indexes quickly. Second, the early-production reliability issues. Walther shipped the WMP starting in 2022, and the first year of production saw documented problems with light primer strikes and failures to extract, primarily traced to ammunition sensitivity and to a firing pin spring issue that Walther addressed under warranty. Production guns from late 2023 onward have generally been more reliable, but a prospective buyer should research the production date and serial number range of any specific gun being considered.
The relevant comparison is the Kel-Tec PMR-30. The PMR-30 doubles the capacity at 30+1 and cuts the weight by more than 13 oz, but the WMP trades that for German manufacturing quality, a refined trigger, and a modern modular optic-ready platform.
Best For
Strengths & Limitations
- German manufacturing quality. Tight slide-to-frame tolerances, refined trigger pull, and overall fit and finish that owners and reviewers rate well above the Kel-Tec PMR-30.
- True optic-ready platform with adapter plates included for RMR, Holosun K, and Docter footprints. The Kel-Tec PMR-30 requires aftermarket plates that aren't included from the factory.
- Grip ergonomics carry over from Walther's PDP line — owners report the WMP feels and handles like a "real" pistol rather than a rimfire novelty.
- Early production runs (2022 through mid-2023) had documented reliability issues with light primer strikes and failures to extract. Walther addressed these under warranty but a prospective buyer should research the production date and serial number of any specific gun being considered.
- Ammunition-sensitive across all production years. The action runs reliably with higher-velocity loads (CCI Maxi-Mag, Hornady V-Max) but inconsistently with subsonic or low-velocity .22 Magnum.
- 15+1 capacity is half the Kel-Tec PMR-30's 30+1 in the same caliber category, and the WMP weighs 13.8 oz more.
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Frequently Asked Questions
Did Walther actually fix the early WMP reliability problems?
Largely yes, but with caveats. Walther identified the firing pin spring and extractor issues that plagued early production and revised the parts. Production guns from late 2023 onward have generally been more reliable in owner reports and reviewer testing. Walther's warranty service has been well-regarded for addressing problem guns. A prospective buyer should still check the serial number against Walther's update advisories and confirm the gun is from later production. Used WMPs from the first year should be inspected for the updated parts before purchase.
What's the recoil-spring service interval on the WMP?
Walther recommends recoil-spring replacement around 5,000 rounds for the WMP. The spring assembly is a captured guide rod design that costs under $30 from Walther parts and is user-replaceable in a few minutes with no gunsmithing tools. Owners running .22 Magnum heavily report no spring-related failures inside the recommended interval.