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Discussion Starter · #1 ·
Hey guys. I picked up my M&P 40 today and cleaned it right when I got home. I didn't pay attention before I cleaned it but is this normal?



The finish on the crown is splotchy. I wonder if my bore cleaner did this. I used Blue Wonder gun cleaner.



 

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The gun is test fired and it leaves residue on the crown. It can be difficult to remove. The pic is not helpful with any detail but I would guess that it is some remaining powder residue.
 

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Discussion Starter · #6 ·
I'm not worried about it too much. It's all cosmetic. I was just wondering why the crown was almost silver in color instead of black. No biggie. Looks better on the business end.
 
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