About 400 rounds in we started experiencing failures to extract. Until this point I didn't know this might be an issue with the guns. Once I got home and did some searching, I found others with the same problem.
Sig is also implementing rolling changes. In this video you will see an updated striker that a viewer sent to me who just got their gun back from Sig warranty repair. The new striker is considerably different from the striker my two guns have. Meanwhile, Sig's project manager for handguns made a public post saying that the striker failures were incredibly low, below industy standards for any manufactured item. If this were true, why on earth would Sig redesign the striker?
Anyway, we have more testing to do now that the gun is having failures to extract. We'll see if the problem continues or if by some miracle it remedies itself by shooting the gun more.