The hammer pin will break at some point. It's a known issue due to the direct blowback.
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Running a Geiselle SSA-E trigger in an otherwise stock Olympic 9mm. No idea of round count, but no issues.
Did you end up trying it out? I picked up a 6951 last week and was interested to hear since I put Geissele Triggers into all of my ARs.
If a properly ramped 9mm bolt is used, are there still potential hammer pin breakage / lower receiver hammer pin hole wear issues?