Yes you can send it back for the pc treatment but i'm no sure if is free of charge I think you have to pay for it.
Also you can try polishing the internals as suggested, dry firing it a as much of you can, and shoot as much as you can. Most people report that the gun gets better after a few hundred rounds.
Mine was like yours but I opted for the apex duty carry kit instead it worked great for me, very happy with it, all the issues went away and trigger pull is under 6lb.


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M&P 9, Shield9.