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Discussion Starter #1
I've shot 150 rounds through it now, and on the last round of every magazine, it jams. Sometimes it happens on the second to last round also. I've used 2 types of ammunition and it still happens. This happens using both factory magazines. It even happens if I only put 3-5 rounds in the magazine.

Has anyone else experienced this? Do I need to contact S&W maybe?



 

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Yep, I'd say that was one for S&W to solve, but one question: is it jamming feeding the last round, or ejecting the last round?
 

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That is quite odd, I am thinking a trip back to Smith and Wesson is the best bet. Good luck for a quick resolution...

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Have you disassembled the magazines and cleaned them at all?
They may have been gunked up from the start.
 

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Discussion Starter #7
Yes, I've taken apart both magazines. They both seem fine. I've never dealt with Smith & Wesson support. Is it easy to have issues fixed with them? Do you usually mail it to them, or take it to the store it was bought from?



 

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I've found it easier lately to go to the S&W website and send them an email rather than call and wait around on hold. If you decide to send it back. You'll receive a confirmation email back almost immediately.
 

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Can't tell from the pictures but is the inside of the mag tube clean?
I would clean everything thoroughly and retry.
 

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Discussion Starter #11
Can't tell from the pictures but is the inside of the mag tube clean?
I would clean everything thoroughly and retry.
Yea, the inside of it's clean, and I did shoot again after cleaning it. Same thing happens.
I used Winchester & Independence ammo, not sure the grain
 

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Don't worry. You'll be dealing the best in the business as far as customer support goes. S&W will make it right. Good luck.
 

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I never had to deal with S&W CS but its the best in the business. I bought my M&P9 FS at the range that I shoot at. They have a M&P expert on staff and they installed a trigger spring for me for free. Check with the place you bought it or the range you shoot and maybe they have someone who can help you out B4 sending it in to S&W. It's got to be mags as if it were the feed ramp the jam would happen on 'other' rounds. (JMHO)
 

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I had this happen on my 40c when it was new. It would jam feeding the last round. I called CS and they said wait a little while, put more rounds down range. I ended up having both mags loaded for about a month before my next range visit. This time had zero issues. I'd say your mag springs are just stiff and need some breaking in. Give it a shot, I think you'll be fine.
 

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Discussion Starter #16
Just an update on this, I contacted S&W, and they sent me a pre-paid shipping label, and I sent it to them. They say the turn around is 4 weeks, so I guess I'll be without it for a while, but hopefully they can fix it
 

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Keep us updated and sorry to hear of the issues your having . I have the M&P pro9 and so far it's been flawless threw the first 100 rounds . Plan on hitting the range this weekend to run another 100 or so .
 

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Sounds like a burr or machining marks on the chamber and/or feed ramp. A good polishing might cure this problem. After polishing, my feed ramp and chamber is like a mirror and slick as ice. Absolutely no feed issues.


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I had that issue on my 45, but only with a certain magazine. Turns out that magazine's spring bend over up near the top 1/4 mark, making the last two rounds not feed correctly.
 

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Magazine problems

This is a problem many face. If you don't correct it will manifest as a "last round hold open" problem. stretch the magazine spring! remove the bottom plate and pull. Add 6 inches to it and you may find a solution.
 
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