The basic SWD scope is PSO-1 and it has 4x magnification.
They are now newer versions of PSO-1 like: PSO-1M, PSO-1-1, PSO-1M2, PSO-1M2-1, PSO-1M2-01, PSO-1M2-02.
There is also a version of PSO-1 for AKM rifles with side rail but they don't have stadiametric rangefinder.
I had one borrowed from my friend. It is useful but I prefer red dot with/without magnifier.