Have a very early M&P .40S&W that I have .357sig and 9mm barrels for.

Issue is the gun during firing of the 9mm and 357sig (haven't shot .40S&W from it for a while) seems to eject mags out of it on its own.

multiple people have had this happen to them.

It is not a handling issue. Its happened shooting one handed and off hand. For several people that have tried it.

early (2006-2007) M&P's mag releases had a metal insert that wasn't hardened. after some use, some of them experienced this.

get a new magazine release from brownells, speedshooter specialties or midway and it should go away.

Car541 is correct. I would go as far as contacting Smith and Wesson and see if they will send you a magazine release for free.

It will take you all of 10 seconds to change it, and I bet they will make it right by you.

The serial number is

MPA0xxx so yeah it's an early one, I will give them a call Tuesday thanks

**Update**

Gun is headed back to S&W for work.