If I am not mistaken, the Walther "Model 6" that was in 9mm... but it did not work as most of them had cracked slides due to the high power of the 9mm for blowback operated guns.......
thats why they started to work on the 9x18ultra/police....
the one on Gunsamerica is just a 9mmkz.... I think the seller just forgot to mention this... the PP was never chambered in 9mm Luger.
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