Problems with early production M&Ps?

[jmeng]

I have a full size M&P 9 that I bought new in '07 or '08. I've seen a few mentions on here about changes S&W made along the way to make them more reliable. Can someone fill me in on these or give me a link? Is there anything I need to look at upgrading on mine from a reliability standpoint?

 

[11Bravo]

I know the early models had problems with strikers failing or breaking. These were the black strikers. S&W started using the white strikers that fixed the issue. Not sure of when they made the swap.

 

[goteron]

And the sear housing spring size. They had this ridiculously small sear spring and plunger, so there was a dead trigger problem.

I know there were a few other changes, Sin-Ster probably knows better than I.

 

[Vanilla Gorilla]

I have a full size M&P 9 that I bought new in '07 or '08. I've seen a few mentions on here about changes S&W made along the way to make them more reliable. Can someone fill me in on these or give me a link? Is there anything I need to look at upgrading on mine from a reliability standpoint?

Call Smith give them the serial # they will advise you of any recalls and or fixes and take care of them for you.

 

[jmeng]

Call Smith give them the serial # they will advise you of any recalls and or fixes and take care of them for you.

Will try that. Thanks.

 

[SpeedRacer]

Unfortunately S&W will not replace anything for free unless it breaks, but will gladly sell you the parts.

You need:
Newest revision striker assembly (silver in color, ~$18)
Newest revision mag followers (grey with the number 9 stamped on top, ~$4)

And the BIGGIE, you need the larger sear plunger/spring. You can either order a new sear housing assembly from Brownell's (~$40 IIRC) or send yours to Apex and have them mill it to accept the larger plunger ($32).

 

[jmeng]

Unfortunately S&W will not replace anything for free unless it breaks, but will gladly sell you the parts.

You need:
Newest revision striker assembly (silver in color, ~$18)
Newest revision mag followers (grey with the number 9 stamped on top, ~$4)

And the BIGGIE, you need the larger sear plunger/spring. You can either order a new sear housing assembly from Brownell's (~$40 IIRC) or send yours to Apex and have them mill it to accept the larger plunger ($32).

I know my followers are grey but will have to check to see if they have anything stamped on them. How can I tell if my sear spring/plunger is the large or small one? Any pictures comparing the two?

 

[SpeedRacer]

You need to pull out your sear housing and remove the sear to look. If you bought in '07-08 I an almost guarantee you have the small plunger.

Small on the left, updated on the right.

 

[jmeng]

You need to pull out your sear housing and remove the sear to look. If you bought in '07-08 I an almost guarantee you have the small plunger.

Small on the left, updated on the right.

Thanks for the pic. The more stuff like this I come across, the more I'm tempted to trade it for a Glock.

 

[goteron]

Glock had teething problems too. Even the Gen 4's

The M&Ps are great guns.

 

[jmeng]

Glock had teething problems too. Even the Gen 4's

The M&Ps are great guns.

Yeah, I'm mostly kidding. Will check everything out tonight and see what it looks like.