Our LGS is also bone-dry in semi auto land. I was in there a few days ago (22nd i think) and it was down to .22 AKs and ARs, most likely marked up. My LGS is pretty good about not price gouging, their stuff is a touch more expensive then normal, but it stays that way. The pistol counter looked normal, didn't check on the high-cap stuff. They had just gotten in boxes and boxes of Pmags for $20, which I think is still within reason.
Lots and lots of 7.62X54R, and a large amount of 7.62X39. People were buying it by the 1000's as I was there though.
Generally speaking holes in anti-gun theories are called "facts."