Not unusual, even before the virus panic they were slow to ship & reply.
They’re a small operation. But I’ve ordered their a Galil folding stock & folding brace. Both times it was about two weeks before my item shipped.
But both times I did eventually get a reply, and an email when my orders shipped. Great quality stuff, well worth the wait.
RTGparts used to have folders but they’re out. eBay has been a good source for parts including folders but it takes patience. They’re not cheap anymore.