The SKS is a peculiar thing.
One of the last semi-auto-only military rifles produced (as late as the 1970s) it was fielded at the same time as the Kalashnikov, is still regularly encountered wherever the latter is found and is arguably why the 7.62x39mm round became popular in the U.S in the first place. Why? Because an estimated 1 million of these guns were imported to the states from China alone in the 1980s and likely even more than that from the former USSR and Yugoslavia since 1991.
That led the gun from looking like this:
To this, once given the Red White and Blue treatment by companies like SG Works and TAPCO:
Anyways, more in my column on the subject of the SKS’s curious history in my column at Guns.com.