I travel south central PA daily with the ability to visit any/all gun shops I come across, & I can attest not many seem to have Kalashnikov's these days. I know because AK's are my interest & the main reason I stop. The one's I do see are typically trade-in's which are happen chance. Otherwise, some may have PSA or Century new stock.
I'd suggest Arms of America (great service) who are a dealer for WBP & FB Radom. They currently have a fresh inventory of WBP Jack's & Mini Jacks (on sale). All in 5.56 or 7.62
Atlantic Firearms are another choice for Zastava, WBP, FB, & Arsenal. They currently don't have much of the aforementioned in stock but do show Arsenal SAM5 & SAM7's on hand.