I have a Loaded 9mm with the standard Springfield locking mainspring. I took the gun apart tonight to do a detailed cleaning and noticed that there is no retaining pin for the main spring. There is a hole for it, but no pin. Is that because of the locking system, or is the pin just missing?
For what it is worth, the gun functioned fine and I have around 5k rounds through it.
For what it is worth, the gun functioned fine and I have around 5k rounds through it.

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