The S&W M&P problem thread
After hearing reports of extraction and failure to reset issues, I am opening a thread for rational discussion from experience on the S&W M&P. Focus is on known widespread or repeatable problems.
Please speak from experience and check all emotions at the door.
I have a mailing label at the house to send back my wife's M&PJG for a slide release that requires far too much effort to use and my PT.com M&P for no less than 7 failures to reset the striker in the last 1k rounds. Also the tritium insert in the front sight of the PT.com gun is now gone. Sending them out next week.
*Notification: we are a S&W LE Dealer, fan of the M&P and certified factory amorer.*
Originally Posted by Littlelebowski
Failure to Extract (9mm)
M&P's in 9mm have issues with shallow rimmed 9mm casings (Winchester White Box) and has been an issue since the early days of the M&P. About a year ago, S&W changed the extractor on them to resolve this issue. The way you can tell if you have an old extractor or not is by the roll pin holding the extractor in. The hollow roll pin tells you that you have the old extractor. A solid roll pin means that you have a new extractor.
Why haven't we heard more about this issue? Several reasons for this. First, most people don't shoot enough to find it or don't shoot WWB ammo. Second, extractors can vary in spec. So some will be worse than others. Third, the tightness of the chamber plays a roll in this as well.
Personally, I own an early M&P with the "bad" extractor. I have never had any issues with any types of ammo. So this problem is hard to nail down as it shows itself randomly.
Failure to reset (trigger)
This problem can occur when using the S&W performance center sear or/can happen as well with the APEX sear (only one case reported so far to APEX). Two possible reasons for it happen. The dog ear on the trigger bar is not open enough (reset too far to the rear) or the trigger bar is not angled enough to properly trip the sear.
Why haven't you heard about this more issue? Very few people run a PC or APEX sear. Every trigger bar is different (to include the angle in which it interfaces with the sear and the opening of the dog ear). It is a vary sporadic thing and most M&P users will never encounter this issue.
I am running an APEX sear in my gun and have no reset issues.
The above description of the problems and fixes are to the best of my knowledge.
The tritium issue has nothing to do with S&W. Trijicon is the problem child with that one.
Originally Posted by Aray
Last edited by C4IGrant; 04-28-10 at 13:10.
I had failure to extract issues with a new extractor and 9mm Winchester NATO ammo. It was only shot during the first 400 rounds of the gun's life, and hasn't reappeared in the 2500 rounds since.
Since we are talking about issues with the M&P, there is another one. It is called auto forwarding and S&W is aware of it (and has lost contracts because of it).
Some (this would include me) have no issues with auto forwarding. All M&P's do it, but how hard you have to insert the mag to get it to happen will vary from gun to gun.
We worked up a new slide catch for the M&P and gave it to S&W at Shot Show. It made it much harder for the gun to auto forward, but was still easy to release (hard thing to do). They are currently T&Eing it.
For those that don't know, most all handguns can be made to auto forward. Some are just harder to do than others.