The Walther WMP is a striker-fired semi-automatic pistol in .22 WMR with a 4.5-inch barrel and a 15+1 round capacity. The aluminum slide has an optic cut for mounting red dot sights, and the integrated Picatinny rail allows adding a light or laser. Two magazines are included. 
 
Key Specifications 

• Brand: Walther Arms 
• Model: WMP 
• Caliber: .22 WMR 
• Action Type: Striker Fire 
• Capacity: 15+1 rounds 
• Barrel Length: 4.5 inches 
• Overall Length: 8.20 inches 
• Weight: 27.80 oz (empty magazine) 
• Frame Material: Polymer 
• Slide Material: Aluminum 
• Finish Color: Black 
• Sights Configuration: 3-Dot adjustable sights 
• Grip Material: Black Polymer 
• Includes Magazines: Yes (2 magazines) 
   
  Detailed Features 
   
  The striker fire action delivers a consistent trigger pull, and the optic cut on the aluminum slide means a red dot can go on without gunsmithing. The polymer frame keeps the overall package light, and the textured grip holds up in wet conditions. The Picatinny rail is a practical addition for those who want to add accessories. 
   
  The 15+1 capacity is higher than most .22 WMR pistols, which reduces the need for reloads during range sessions or field use. 
   
  Target Audience 
   
  This pistol works for first-time buyers who want a manageable recoil platform, experienced shooters using it as a training tool or small game pistol, and anyone looking for a versatile rimfire carry option. 
   
  Usage Scenarios 
   
  For home defense, the high capacity and easy operation are practical advantages. At the range, the .22 WMR cartridge offers more power than .22 LR with still-manageable recoil, though ammunition cost is higher than .22 LR. Field use benefits from the Picatinny rail and optic-ready slide.

Owners frequently mention the compact size and light weight as the main reasons they chose the WMP, with many describing it as a natural fit for both new and experienced shooters wanting a rimfire option. The 4.5-inch barrel gets credit for consistent accuracy at typical pistol distances, and the striker-fired mechanism's consistent trigger pull is generally appreciated.

Ammunition availability is the most common concern, since .22 WMR is harder to source than .22 LR. Ergonomic preferences are split, with most finding it comfortable but some wanting better grip texture. Overall, the sentiment is positive with the main limitation being ammunition supply rather than the pistol itself.

When I first took the Walther WMP out to the range, I expected that familiar pop of a .22. But being a .22 WMR, it delivers more bark than I anticipated. It’s loud—surprisingly so—but that’s part of what makes it fun to shoot. Despite the noise, it handles like a dream, with soft recoil, almost like a .22 LR, and balanced enough for easy one-handed shooting. The WMR is great for backyard target shooting, which is mostly what I use it for. The aluminum frame keeps it lightweight, and the fiber-optic front sight makes quick target acquisition a breeze. If you’re into red dots like I am, the optic-ready slide is a solid feature. The trigger is smooth and crisp—not Walther’s best, but definitely one of the better .22 triggers I’ve felt. While it's not a carry piece, at least for me, it’s perfect for plinking, small game, or if you want more power than a .22 LR without the recoil of a 9mm. It is a fun, reliable shooter that brings excitement without punishing recoil.