Почему спецназ выбирает 9х39? Секрет самого тихого и мощного патрона

In this video on the TECHNOLOGY_OF_WAR channel, we'll examine the legendary 9x39 cartridge. Why did it become the "gold standard" for the VSS Vintorez and AS Val rifles? We'll compare its ballistics with the 5.45 and 7.62 rounds, examine the design of the SP-6 armor-piercing bullet, and discover why Western counterparts are still trying to catch up with this Soviet design from the 1980s. This is the story of how to transform a heavy bullet into a "silent hammer."