Now that you mention it my trigger pin isn't exactly flush. I have a 40C. The left side sticks out just a little bit. I have about 1000 rounds through it & I doubt if the pin will come out any further. My full size M&P40 is loaned out for awhile so I don't know if it's doing the same thing. That gun has many rounds through it as I bought it as a used police department issued weapon. I'll have to check that when I get the gun back.