The most common Walther PP variant is the Walther PPK, the Polizeipistole Kriminalmodell (Police Pistol Detective Model), indicating it was more concealable than the original PP and hence better suited to plainclothes or undercover work. Sometimes, the name Polizeipistole Kurz (Short Police Pistol) is used, however the accuracy of that interpretation is unclear. The PPK is a smaller version of the PP (Polizeipistole) with a shorter grip and barrel and reduced magazine capacity.
The PPK was released in 1931; both popular with European police and civilians, for being reliable and concealable. During World War II they were issued to the German military and police, the Luftwaffe, and Nazi Party officials; Adolf Hitler killed himself with his PPK in the Führerbunker in Berlin. Moreover, the Walther PPK pistol is fictional secret agent James Bond's signature gun in the films and most novels. Ian Fleming's choice of the Walther PPK directly influenced its popularity and its notoriety.
The PPK was among the world's first, successful double action semi-automatic pistols that were widely copied, but still made by Walther. The design inspired other pistols, among them the Soviet Makarov, the Hungarian FEG PA-63, and the Czech CZ50. Although it was an excellent semi-automatic pistol, it had competitors in its time. The Mauser HSc pistol and the Sauer 38H pistol (a.k.a. model "H"), were successful in their own rights. Sauer pistol production ended at war's end, but the refined SIG P230 and the P232, owe much to the Sauer 38H.
