2024 Sks sghyran - The SKS is a Soviet semi-automatic carbine chambered for the 7.62×39mm round, designed in 1943 by Sergei Gavrilovich Simonov. In the early 1950s, the Soviets took the SKS carbine out of front-line service and replaced it with the AK-47 however, the SKS remained in second-line service for decades.