The Walther PDP is a full-size semi-automatic pistol chambered in 9mm Luger. It has a 4" barrel, holds 18 rounds, and ships in black. 
 

Key Specifications 

• Caliber: 9mm Luger (9x19 Para) 
• Action: Semi-Automatic 
• Capacity: 18 rounds 
• Barrel Length: 4" 
• Finish: Black 
   

Detailed Features 

The PDP's Performance Duty Trigger is a frequent selling point. Walther designed it to have a smooth pull and short reset, which helps with follow-up shot speed and accuracy. The grip texture is aggressive enough to hold in wet conditions without being uncomfortable during longer sessions. The pistol ships optics-ready, so mounting a red dot doesn't require a separate slide cut. 
 

Usage 

The full-size format with 18-round capacity makes this a practical choice for home defense and range use. Concealed carry is possible but the full-size frame means it works best for those comfortable carrying a larger pistol. The grip and trigger get consistent praise from competitive shooters too.

The Walther PDP in 9mm draws consistently positive reviews with a narrow set of criticisms.

Ergonomics come up most often as a highlight. Owners describe the grip texture and geometry as comfortable to hold for long sessions, with good purchase even when wet. Accuracy out of the box is regularly praised, and the trigger gets specific attention for its smooth pull and short reset, which improves follow-up shots in both competition and practice.

The main criticism is size. As a full-size pistol, it's not the first choice for concealed carry for shooters who prefer something more compact. The 18-round capacity is considered adequate by most, though a few owners would prefer higher-capacity options.

Overall the PDP has a good reputation for build quality and performance and is a common recommendation in the full-size striker-fired category.