Wal Wmp 22WMR 4 5 10RD Blk OR

About this product

The Walther WMP is one of the few purpose-built semi-automatic pistols chambered in .22 WMR (.22 Magnum) rather than standard .22 LR, giving buyers a rimfire pistol with meaningfully more power and range than a typical plinker. This listing is the black, optics-ready configuration with a 4.5-inch barrel; note that the magazine on this particular listing is a 10-round unit, while Walther's standard WMP magazine for most configurations holds 15 rounds — buyers in compliance-capacity states like California should confirm which magazine ships with this specific listing before ordering.

Why chamber a pistol in .22 WMR instead of .22 LR?

.22 WMR carries significantly more velocity and energy downrange than standard .22 LR, historically limiting it to rifles and revolvers because semi-auto pistols struggled to cycle it reliably. Walther engineered the WMP specifically to handle that pressure and rimmed-case feeding challenge in a semi-auto platform, giving shooters a rimfire pistol with genuinely more stopping power and range than a .22 LR pistol, while still costing far less per round than centerfire self-defense ammunition.

What does the semi-automatic hammer-fired action mean for how it shoots?

Unlike most modern pistols, which use a striker system, the WMP uses a hammer-fired action — a deliberate choice by Walther to handle the .22 WMR cartridge's pressure and rimmed case reliably. The barrel itself is a carbon steel bull profile with a 1:16.5-inch right-hand twist, built heavy enough to add stability and help tame the WMP's more energetic cartridge compared to a typical polymer-only rimfire barrel.

What's the optics-ready slide compatible with?

This configuration's slide is factory-milled for red dot optics, letting buyers mount a compatible reflex sight directly without an adapter plate. Combined with 3-dot iron sights as a backup, the WMP is built to function as a genuine range and small-game hunting pistol with modern optic compatibility rather than a bare-bones rimfire plinker.

How heavy is the WMP, and how does that affect recoil?

At around 27.8 ounces with an empty magazine, the WMP carries meaningfully more heft than a typical .22 LR pistol, which helps offset the increased recoil and muzzle report that comes with the more powerful .22 WMR cartridge. Shooters coming from a lightweight .22 LR pistol should expect a noticeably different — though still very manageable — recoil impulse, more in line with a light-recoiling centerfire pistol than a standard rimfire plinker.

What is the WMP best used for?

Between its power level, optics compatibility, and heavier bull barrel, the WMP is well suited to small-game hunting, pest control at slightly longer range than .22 LR allows, and range use for shooters who want more cartridge performance without stepping up to a centerfire pistol. It is not marketed or optimized as a primary defensive pistol; buyers considering it for personal protection should weigh .22 WMR's terminal performance against dedicated defensive calibers before relying on it in that role.

As a firearm, this pistol ships to a licensed FFL dealer rather than to your home address; you'll complete your background check and required paperwork there before taking possession. California buyers should confirm current compliance status and magazine capacity for this exact configuration with their FFL before ordering.

What ammunition should I run through a .22 WMR pistol?

Because .22 WMR was historically a rifle and revolver cartridge, not every load on the market is optimized for reliable cycling in a semi-auto action — Walther and experienced WMP owners generally recommend sticking with quality factory ammunition from established manufacturers rather than mixing in older or lower-quality .22 WMR stock, since feeding reliability in any semi-auto rimfire pistol depends heavily on consistent ammunition velocity and case dimensions.