Makarov pmm pistol: caliber: 9× 18mm, after the end of the Second World War, the Soviets summed up the experience of wartime and found that the pistol was extremely low in actual combat, coupled with some inherent shortcomings of the Tokarev pistol, so it was decided to develop a new officer self-defense pistol. Makarov began designing his self-defense pistol in the late 1940s and named it the Makarov pistol. Since the structure of the pm is similar to that of the German Walter pp, it is believed in many sources that makarov was an imitation of a German pistol.

In 1951, the Red Army decided to adopt the Makarov PM pistol as a new self-defense weapon, which remained in service until the 20th century, in addition to the former Soviet Union/Russia, and was also imitated in China and other former Warsaw Pact countries. In 2003 the Makarov pistol was officially replaced by the new PYA pistol, but before phasing out there were still a considerable number in service with the Russian army and law enforcement agencies.
The Makarov pistol adopts a simple free recoil working principle, simple structure, reliable performance, low cost, and was one of the best compact self-defense pistols of the same era at that time. When shooting, the pressure of gunpowder gas acts on the bottom socket of the sleeve through the bottom of the shell, so that the sleeve sits back, and the weight of the sleeve and the strength of the re-entry spring are used to reduce the speed of the sleeve recoil, and after the warhead leaves the muzzle, the chamber is opened and a series of actions such as shell ejection are completed.
The firing mechanism of the Makarov pistol is a hammer rotary type, a double-action firing mechanism. The fuse includes an in-place safe and a manual safety handle on the outside. The Makarov pistol uses a fixed flake crosshair and notched shot, which has the best shooting accuracy and lethality within 15-20 meters.
Its steel magazine holds 8 rounds of pm pistol cartridges, and in the last decade of the 20th century there were many experiments to improve the shortcomings of the Makarov pistol, the most obvious of which were the low stop action and lethality, as well as the small capacity magazine. First, the improved ammunition uses a lighter warhead and a faster firing rate of the propellant particles, and the new bullet has an initial velocity of 430 m/s, which is faster than the original 9×18 mm bullet of 315 m/s, increasing the muzzle kinetic energy to 1.7 times.
The Improved Makarov pistol, which increased the ammunition capacity, was developed at the same time as the new ammunition, the magazine capacity was increased to 12 rounds, the original slender grip was changed to a shape that could accommodate the thicker magazine, and the grip panel was also improved. The improved Makarov pistol was typed as a pmm pistol.
The new cartridge was also defined as a 9× 18mm pmm cartridge. The pmm pistol can be used with both standard pm bullets and improved pmm bullets, which are used by the military and law enforcement agencies, but apparently the luck of the sale is not good. In the end, the Russian army decided to adopt a new and more promising pistol, the Yalikin Pya high-capacity pistol, also designed by the Izhevsk Machine Factory.