SKS stock question?

[Sentryduty]

I was told that this example had seen action by the dealer who sold it to me.

It's a possiblity, however with the proliferation of arms like this it is nearly impossible to verify unless it was papered sometime in it's life when released from Chinese military service. These guns have literally been all over the world, some went from the PLA straight to civilians and others came from other means.