Re-routing from other thread
Unless someone has very large hands, or is absolutely committed to Glock, I also think the M&P would probably be a better polymer .45 than a G21.
The actual Hilton Yam article seems to be gone from the internet now, but he is quoted here...
edit to add: had to change this link too
https://www.military.com/kitup/2013/...nce-glock.html
If we were comparing the Glock 21 to the M&P 45, then let’s just stop here and declare the M&P .45 the winner and move on. Superior ergonomics by far, good accuracy, and availability of thumb safety to help transition 1911 shooters make the M&P 45 the clear winner in my opinion. Add a viable and reliable factory 14 round magazine, and you pretty much have the whole package wrapped up with a bow.