I spoke to Magpul today, mostly to report price gouging, which they know about and are not happy with, and also to ask about production.
They've ramped it up and are aware about everybody being out of stock. They know about the shortages and assured me that they'll be shipping out massive amounts in January.
Basically they said to wait out the idiots and ignore any panic. Same with ammo. Don't freak out and it'll be back in stock in time. Just like it was when this happened four years ago and eight years ago, etc.