Back during Clinton's first term, there was big primer shortage. I still have many of the cases of them I stockpiled. Word from the gun grabbers was that this was the achille's tendon of the reloading world. Hard to make in your basement. And impossible to assemble reloads without. There has been a backlog of AR-15 lower receivers since the November election. Wouldn't be surprised to see a primer shortage, if there isn't already one, in the near future.