Hi, folks,
The word "Kriminal" in German means detective. (A detective story is a "Kriminalroman" , literally a "detective romance".) The word for criminal is "Kriminelle". The term PPK stands for "Polizel Pistole Kriminal" or Detective Police Pistol.
As for Mr. Bond, does anyone remember that after so much fuss was made about the smashing power of the 7.65mm Walther PPK, there is one scene in which Bond, holding the PPK, ducks behind a sofa and comes up with the PPK magically changed to a 1910 Browning with a "silencer". The reason is that it is easy to put a long 1922 barrel on the 1910 and that gives enough extra length to put on a fake silencer.
Jim