The Soviets quickly phased the SKS carbine out of first line service, replacing it with the AK-47, but it remained in second line service for many decades afterwards.
Being one of the most popular semi-automatic rifles ever made, there are approximately a dozen variations of the SKS made in country’s that were at the time allies of the soviet union.
In many country’s the SKS rifle is very popular in the civilian surplus market to this today.
Underside of the SKS dust cover