If i had to carry a handgun into combat, I'd take that Makarov any day of the week over the PPK.
The PPK looks nicer, and in the best examples are striking examples of superlative fit, finish and attention to detail.
The Makarov is none of those but has a much better chance of working under non-optimal conditions.
It is it's finicky nature that sours me on the PPK, not it's weight or caliber. .../
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I have a number of PP series pistols, and I've sold off a few more.
I have a pair of Ranger made PPK/S pistols that I have no reservations about carrying as they are accurate and reliable with 90 gr XTP ammunition. One of them is in the 12 O'clock position in the picture above.
I also have a pair of Austrian surplus police PP pistols in .32 ACP that are also very reliable. And the round performs well enough in it's 60 gr XTP iteration, although I prefer the .380 ACP. Of them is just below and to the right of the Ranger made PPK/S above.
The other two on the right are a Walther made military proofed PP in .22LR, the British L66A1 version, and a Umarex Walther PPK/S .22LR.
The three on the left side are FEG pistols based on the Walther PP series. Top left is an AP9S. It is a PP sized, steel framed commercial pistol chambered in 9mm Kurz (.380 ACP). Interarms started importing them as an alternative to the PP after Walther discontinued it's arrangement with Manurhin and Walther imports were shakey for a bit. They kept selling them as they sold well and were popular pistols. Interarms ordered them with a very high degree of polish and blue that is quite frankly better than the finish on Walther pistols.
The pistol below at left center is an APK9S. It's also a steel framed commercial pistol chambered in 9mm Kurz/.380 ACP, but using a shorter slide, similar to the PPK/S (thus the "K" for Kurz).
The pistol at bottom left is a KBI SMC. It's an FEG made pistol imported by KBI. It's a smaller PPK sized pistol chambered in .380 ACP but it uses an aluminum frame. It has the distinction of being the smallest pistol imported to the US since the passage of the Gun Control Act of 1968. The finger extension is just long enough to meet the 4" height requirement. Unfortunately, KBI didn't spec them at the same level of quality and it's not reliable enough for me to consider it for self defense use.
Not all the FEG AP and APK pistols have the same level of quality.
Below top to bottom:
FEG AP9S
FEG APK9S
FEG APK7S (same as the APK9S, except chambered in 7.62 Browning (.32 ACP)
The bottom pistol was imported by TGI. The polish isn't as nice, the edges are sharper, and the finish isn't a deep blue.
However, all of them are extremely reliable, in part because the chamber dimensions are slightly more generous, making them far less picky about ammo than a PP series pistol.
The grip frames on them are slightly larger than the PP series pistols as they were upsized slightly to accommodate the 9mm Makarov round.
In fact, FEG made the AP9M and APK9M pistols, which are the same as the AP9S and APK9S, except for being chambered in 9mm Makarov.
7-8 years ago they were fairly common in very good to excellent to even like new in box condition for around $300 to $400. Now they are hard to find, even in just "good" condition.