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that pesky slide locking back on the last round problem. Dan, you should have my gun tomorrow. Do your magic please and I look forward to the new trigger job. It should be a whole new gun when I get it. 'Can't wait.
 

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I just put my first 400 rounds through my MP9 today and the slide failed to lock back on two consecutive mags about halfway through. Is this a common problem? Everything else functioned perfectly from start to finish. Just wondering if it was my mistake (thumb) or is it something i need to look out for? After it happened i field stripped it, everything looked normal, so i put it back together and kept going with no more problems.

Thanks for the info.
 

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chefdog,



Your issue is probably due to your thumb resting on the slide stop lever, and keeping it from engaging on an empty magazine. This is why I wish S&W stuck with the original design low profile slide stop lever instead of the newer extended lever.
 

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I have two M&P compacts, a 9 and a 40 and have not had this problem, but read that many people do. If it is a thumb problem, well it will just have to go.




Dennis
 

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Nikdrak,

THanks for the reply. You know, i was thinking about it last night and i think when the malfunction occured i was trying the small backstrap. I used the medium for most of my shooting b/c is seems to give me better trigger control.



Anyway, i'll be sure to pay closer attention next time or just glue my right thumb to the top of my left
 
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