Asking third party for my cousin in Alaska.
His wife recently purchased an M&P 9mm ported CORE.
I'm here a lot, but not in the S&W semi auto category.
I know little or nothing about semi auto Smith's.
I assume the M&P ported Core has a white dot front
sight by his email.
She is disappointed, as the front sight becomes sooted up
and obscures the white dot after only a few rounds.
Common? Normal? Just the nature of the beast?
A fix?
Looking for any advice to share with him.
Thank you in advance for your time.