Not sure about the OP but mine has a brand new firing pin.
First issues out of the box was constant FTEs. So I put in a Volquartsen extractor and that seem to have fixed the FTEs. But then after, I started having this issue about 300 rounds in. This was with the original firing pin so I swapped...
Hi there, did you end up fixing the issue? I seem to be having the exact same issue as you. I'll pull the trigger and then "click". Eject the round, inspect it. It seems like just a dirt mark and it rubs off. Put it back in the magazine, and then it fires.
See pics below.