Been looking to pick up a couple more replacement bits and pieces for my folded-slide P220, and several places I've checked are showing that the outer roll pin for retaining the breech block has been discontinued by Sig. I've never liked having to scrounge around for used parts that may or may not still be in-spec - is there a suitable alternative or new part number that works? It also looks like some of the more recent P-series have a roll pin again, as opposed to the solid pin used in the P-series from mid- to late-2000s models.
Or am I just SOL?
Edited to add diagram (Specifically referencing part numbers 7° and 8°, found in the top right corner):
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