So today I was doing a light cleaning on my M&P9 and my Glock. I was just finishing up and realized that I put the M&P barrel in the Glock slide. It fit perfectly! I thought this was odd and called a buddy who knows M&P's and Glock's even better then I do, he acted like everyone knew this. Am I just slow, or has anyone else discovered this? He also said that he has even test fired his Glock with the M&P barrel. That last part was either BS or ignorance. He said it shot just fine! LOL
Just thought I would share.