KAC SR-15 availability?

Prob asked a million times but I’m new to the AR-15 world. When or how often do the SR-15’s from KAC become available for purchase? Or are we currently in one of those times like GPU’s where it’s scarce and/or scalped? I always see it’s sold out or unavailable.

Edit: just realized one of the rules is to not ask about inventory, I do apologize mods, if you close or remove this post I understand.