To my knowledge none of the semi-auto PSL rifles imported into the US were built from brand new parts - rather they took military PSL rifles, dismanteled them, gauged the parts and reassembled them on semi-auto receivers.
As such - you may see examples that have pitted parts and were refinished. All of them were refinished.
Romarm on the receiver is a plus in my opinion.
It will be a gamble as to whether or not it will function correctly. The majority will function correctly. The only guaranteed way to know for sure is to test fire it before purchase - something a purchaser rarely gets to do.