Walther PDP F-Series Pro-X PMM, Semi-automatic, Striker Fired, Polymer Frame Pistol, Compact, 9MM, 3.75 Barrel, Parker Mountain Machine Compensator, Tenifer Finish, Black, Optics Ready, Adjustable Sights, 10 Rounds, 3 Magazines 4797050 The PDP F-Series PRO-X Compact features a 4-inch slide and threaded barrel, seamlessly paired with a Parker Mountain Machine compensator. The PMM compensator is specifically engineered for the PDP, delivering best-in-class recoil reduction while seamlessly blending with the pistol's aesthetics. This advanced compensator is housed within a 5-inch full-length dust cover frame, providing superior balance and reliability.