The Walther PDP Pro-X PMM Compact is a semi-automatic 9mm pistol with a 4.6-inch threaded barrel and an included PMM compensator. It ships with three 18-round magazines and has adjustable sights. The frame is polymer with a black finish. 
 

Key Specifications 

• Brand: Walther Arms 
• Model: PDP Pro-X PMM Compact 
• Caliber: 9mm 
• Action: Semi Auto 
• Capacity: 18+1 
• Barrel Length: 4.6" 
• Color/Finish: Black 
   

Detailed Features 

• 4.6-inch threaded barrel with included PMM compensator 
• Ships with three 18-round magazines 
• Adjustable sights 
• Polymer frame, black finish 
• Compact platform

Owners of the PDP Pro-X PMM Compact highlight the PMM compensator as the standout feature. The compensator noticeably reduces muzzle rise in back-to-back drills, and owners who shoot competitively treat it as the main reason to buy this configuration over a standard PDP. Some casual shooters find it adds length they would rather not have for carry.

The three included 18-round magazines are consistently cited as a value-add, and the adjustable sights come in useful for those who want a precise zero out of the box. The Walther PDP trigger is one of the better stock striker triggers in this class, and that reputation carries over to the Pro-X variant without controversy.

The Pro-X PMM sits at a higher price than the base PDP, and owners are split on whether the compensator justifies the premium. Those who use it in competition tend to say yes; buyers who wanted a compact carry gun sometimes feel they overpaid for features they do not use. Build quality is rarely questioned.