It is larger than the PM9. The PM9 you can get into a pocket with no problem. Unless you have a big cargo pocket, the Shield would be much harder to conceal in a pocket. Since I own the Shield & used to own the PM9---I would pick the Shield EVERY day over the PM9. I used to think that the PM9 was the best, but the Shield has moved the PM9 to #2.I want to see if I can get my hands on one to compare it with the Kahr PM9 I bleieve I read that the M&P is a little larger.