M&P 9mm- Problems when new???

My wife purchased an M&P9 last year. It is her 5th handgun, previously two revolvers and two semi-auto's.
As I do with all pistols, I did NOT clean it before hand but merely wiped it down.
Function with 124 gr Speer Lawman and 124 gr Speer Gold Dot was perfect and has continued that way. I do clean with a power spray and lube/protect with 'Barricade' after every 2-3 range sessions.
But what i learned from her purchase of a Glock G19 G4 last year was that the Glock with Winchester 115 gr White Box would have failures to feed for her but not for me. A simple switch to 124 gr Winchester NATO ammunition cured the problem which of course for her would be called 'limp wristing'.
Be aware that this is not a fault that can be cured by simple technique for everyone. If the shooter does NOT have the wrist strength to hold the frame in position for the slide to properly eject and feed another round, the only thing one can do is shoot a load with more momentum, hence the 124gr ammunition.
The problems as reported would appear to me to be a combination of 'limp wristing', ammuntion brand and probably bullet weight.
I would find some reliable 124 gr ammunition for any person who experiences this sort of problem after/before trying to correct for limp wristing.-Dick
 
I picked up my M&P FS 9mm two weeks ago (first time gun owner). I did a very basic cleaning/lube of the weapon when I took possession of it (bore snake with a few drops of CLP on the "knot", and lube on the slide points/rail). I have run 500 rounds through it, 100 rounds of each of the following ammo; WWB, American Eagle, Remi UMC, PMC *and* Sellior and Bellot (all 115 grain FMJ). The gun has worked flawlessly with every brand of ammo I've tried.
 
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I actually shot my FS M&P 9 today for the first time. Worked perfectly. I shot a box of Sellier and Bellot and a box of Hornady and both performed well without a single FTF.
 
New M&P

About three weeks ago I became the proud owner of an M&P 9mm Compact. Cleaned it and took it to the range and shot about 90 rounds. Every 10th or 12th round of Winchester 115 gr JHP (what I could get) jammed. The last jam required help with the slide in order to eject the round. I definitely was not limp wristing it, either. I inspected the feed ramp and noticed some pock marks. I called S&W and sent it back with an RMA for repair.
 
Jamming and Slide not locking back problem

I'm having the same problem with my 9c, I cleaned the gun today and I'm going to try a different ammo when i go back to the range. I know this gun does like PMC bronze 115gr ammo. My gun jammed every 10 to 15 rounds. I managed to shoot 100 rounds out of it today but got angry and left because of the gun jamming and the slide not locking back after the last round. I know i don't Limp-wrist the gun so i feel like this is a problem with the gun and the ammo. Never had this problem with any of the 16 handguns i have owned. I will try this gun one time, if it jams or the slide don't lock back after the last round, i will clean it and sell it.
 
Is there a burr on the inside of your magazine? Did it happen with both your magazines?

Also, if it is still and issue, send it to S&W to look at before you sell it. Selling it in a malfunctioning condition is irresponsible and just plain shady.
 
I have a FS9 I bought back in October, I've put 1800rds through it and had the same problem I think 3 times. My kit came with 3 mags, I cleaned both the gun and mags before firing. I also marked each mag so I can tell the difference between them if there is a problem. Sorry, I guess I forgot to say, the slide wasn't staying back after an empty mag was the issue. But I did notice it was with the same mag. I've fired 400rnds since the last problem. Everything seems to be fine now.
 

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