I'm curious as to how the smaller manufacturers are going to survive. Hopefully they can adapt and continue on.
It depends on what you count as a manufacturer.
There are only a few actual manufacturers of the major components out there. Like 3-5 big companies that make 90% of the lowers. Same with the "regular" barrels. Olympic may very well have been (be?) one of those actual "turn ingot Aluminum into components" businesses - but I have no idea.
The littler guys, the guys who make the boutique and super high-end stuff will still be cranking out their high end stuff because there's a market for them.
Who is going to "hurt" are the middle-men "assemblers" of all the parts. Maybe.
As production techniques are becoming more refined and automated, surviving makers of components will be able to easily keep up with demand. Especially since the US .mil machine still needs/wants a ton of AR stuff... And there are over 50 nations that also use the plat form in some official category or another (though I don't know if there are manufacturing companies in other parts of the world that service others. I wouldn't see why there wouldn't be with how simple things are)
The AR market will survive this. And so will gun owners.