Mach Sakai conducts a comprehensive comparison of the PPK and PPK/S gas pistols manufactured by Maruzen. The review begins with an examination of the package, followed by an assessment of the total length, weight, and magazine of the pistols. Attention is then turned to the engraving and the trigger pull. An interesting observation is made regarding whether the magazine falls due to its own weight. The safety device and grip are also evaluated. The process of gas injection and BB bullet insertion is demonstrated. Live firing of both the PPK and PPK/S is conducted, with measurements taken for initial velocity and firing sound. The review concludes with a Steel Challenge Roundabout and an APS Cup Bullseye, providing a thorough analysis of these two models.