Welcome to the forum.
If I'm understanding your question correctly, and after looking at the schematic, I believe that pin may have a spring clip or "snap ring" on it to secure it in the pin hole. Have you checked each end of the pivot pin to see if there is such a ring?
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Ret. LE, FA Instr, S&W Armorer
Last edited by armorer951; 09-08-2020 at 06:38 PM.
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