If Nikolay Fyedorovich copied the PP he did away with 17 parts, the Walther has 42 parts, the Makarov only 25 even though they are both blowbacks. Although they look similar, the PM Makarov is a breed of it's own. All those other pistols are chambered for the 9X18 but they are not "Maks"
The 9X18 was designed to be as powerful as possible without requiring a locked breech. The cartridge is not really a 9mm. The 9X19 has a bullet diameter of.356-.357, where as the Makarov bore is larger at .363-.365. Absolutely not interchangeable.
The Ultra cartridge was updated to a round called the Police for the W German police in the 70s but didn't last long....undoubtedly, the Mak was inspired by a lot of design and engineering techniques but it and it's ammunition are unique.
The 9X18 was designed to be as powerful as possible without requiring a locked breech. The cartridge is not really a 9mm. The 9X19 has a bullet diameter of.356-.357, where as the Makarov bore is larger at .363-.365. Absolutely not interchangeable.
The Ultra cartridge was updated to a round called the Police for the W German police in the 70s but didn't last long....undoubtedly, the Mak was inspired by a lot of design and engineering techniques but it and it's ammunition are unique.