The WWII Walther P-38 can be an indifferent creature when it comes to accuracy. They can be greatly improved with the .38 Super bullets. The Post-War P-38 German Police pistols are very accurate with any 9MM ammo. This is a WWII "CYQ" and a Post- War German Police pistol with the steel take down rod dated 1985.
Is the KZ coded Mdl. 98 a special find for you? I was not aware of this being a rare Mauser? Please up date me on the "KZ"?
Top, WWII "CYQ
Bottom, 1985 German Police "P-1" AKA P-38.