alther’s PDP — Performance Duty Pistol — took the handgun market by storm several years ago. Offering multiple frame sizes, slide lengths, modularity, a fantastic stock trigger, and built-in optics compatibility, the PDP seemed to be the pistol that learned everyone else’s lessons. While firmly angled as a conservative and highly functional defensive duty pistol, Walther’s later release of the PDP Pro SD, which included a more refined
