Are the 9mm mags: 10/18 pinned or the Canadian crimped 10 rounders?
They are crimped.
You'd hope S&W would think this through and make these guns take the same mags as the M&P line.
If your only political involvement is voting, you don't actually care. Move aside and let the people be heard.
Get involved in your community!
What is the pros and cons between crimped and pinned?
Sometimes the crimp will pinch the follower and make the mag fail to feed.
IMHO pinned is always preferable.