As was mentioned the PPK/S was born due to the GCA of '68. The PPK could not be imported due to failing the point scale as being too small. Walther took the all steel lower frame of the PP series, and placed the shorter PPK slide and barrel on the PP frame. And the PPK/Special was born. It made the Importation points list by being taller. And happened to fit the big American hand better, so it became a hit, and still is to this day. Do the PPK series guns kick in .380? Yes they do, but get a strong hand hold on it, and it's not too bad. S&W's version started the "Beavertail" thing that Walther approved of, and still makes w/ their newest PPK-PPK/S versions. It does help, somewhat.
I find the original PPK to be a great pocket pistol due to it's size and weight. It is lighter then the PPK/S because it has a cut away frame on the grip strap, and the light plastic grips cover that. With a finger rest magazine, the PPK just barely fits an average hand, but it does fit. As far as the pistol being in .380, there are 2 frames of thought about power. Either carry all ball ammunition and go for penetration, or carry some of the newer enhanced light hollow point rds that are quite powerful for this caliber. In an up close anti personnel kind of engagement, the .380 will get the job done, with proper placement and no barriers to punch through. Across a parking lot, or down the block shooting, nope, the .380 is sucking wind.
The newer PPK's and PPK/S's coming from Walther are just about flawless, IMHO. I have been working on PP's, PPK's and PPK/S's for many years, and more w/ the S&W version(Some are good, some aren't, and need extensive tuning to work). New versions are German made slide and barrel, and American made frame, and then carefully fitted. I have a new PPK, and a new PPK/S, and I am very happy w/ their performance. They joined my 1968 blue PPK in .32 ACP, and my newer PPK/S in .22 LR. I like PPK's and I trust mine.
