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Light polishing of Glock firing pin- Any downside?

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Having watched and done the Glock "25 cent trigger job" I was wondering if there is any advantage or disadvantage to gently polishing the entire Glock firing pin. No metal removal, of course, just a smoother finish for less resistance. Good results on the polishing and better still with an OEM Glock "-" connector and then an Overwatch DAT trigger.

Any thoughts or opinions?
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checking the fired cases from my new G34.3 the firing pin impact depth looked shallow, using Flitz and a bit of elbow grease on the spring cup area of the firing pin and the spring cups themselves the impact looks almost doubled in depth.
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