The .22lr magazines offered by GunMagWarehouse are exactly the ones I was speaking of. They're magazines for the PPK/S .22 as indicated correctly on their web shop. They won't work in a .22 PPK/S.Because there are always people who are not aware of the difference between a .22 Walther PPK/S and a Walther PPK/S .22, you always have to look carefully at the offers. Fortunately, all magazines for the Walther PPK/S .22 can be easily identified so far. They are marked with the P/N 503.600. Such magazines can't be used in your PPK/S.