Says 9mm but it's a 380 acp. On left rail it says "Carl Walther Waffenfabrik Ulm/Do. PPKS Cal 9mm kurz Made in West Germany" On right rail it says, "Interarms Alexandria Virginia" Serial number is 247XXX Gun is in very good condition. No wearing on the finish, there is one piece of slight rust, but it appears thin enough to be easily removed. Has decocking safety device. Let me know if you need better pictures or have any questions. Asking $550, FTF in OKC area.