Walther PDP PRO-X, Semi-automatic, Striker Fired, Polymer Frame Pistol, Compact, 9MM, 4.6 Barrel, 1/2X28 Threaded, Tenifer Finish, Black, Adjustable Sights, Optics Ready, 10 Rounds, Includes Parker Mountain Machine Compensator 4796033 The PDP 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.