Well we have all heard of the Lithgow recall for the faulty barrels but there may be a few more smaller issues out there to. I don’t believe in coincidences ok I know there arent a lot of parts that can break in a rifle and certain parts can be subjected to user abuse. However this is not the second time I have heard about broken extractors.
I broke mine in front of you remember 
however they were hot loads if i remember right and i was beating the heck out of the handle so not surprised that i pushed it past its limits
They wernt hot loads. They were 45.3 grn AR2206H max book is 46grns 
They were shooting well though. They would have been shot in my gun before though so not exactly factory, but I would think well within SAAMI specs.