ToneSurfer Posted July 27, 2014 Share Posted July 27, 2014 (edited) I noticed that the locking block was loose in my M&P 9mm. I made a video of the problem here (really visible at :38 seconds): s893.photobucket.com/user/tonesurfer/media/MP%20Locking%20Block/LooseLockingBlock.mp4.html It's been to S&W and they sent it back saying they replaced the roll pins and that the movement is "normal". I don't think it is "normal" for the roll pin to be wobbling about in the frame hole. This would indicate that the roll pin is wobbling in the hole in the internal steel frame chassis OR the chassis itself is loose, would it not? I called BS and am sending it back a second time. NOTE: I've never taken the roll pins or blocks out. Gun has about 7500 rounds thru it. Edited July 27, 2014 by ToneSurfer Link to comment Share on other sites More sharing options...
Vlad Posted July 27, 2014 Share Posted July 27, 2014 Mine moves a very tad, but not as much as yours. I would say it is the roll pin to frame fit? Try a larger roll pin? Link to comment Share on other sites More sharing options...
mcracco Posted July 28, 2014 Share Posted July 28, 2014 (edited) I don't see the coil pin moving. I do see the locking block moving a bit. Looks like it is rotating on the pin. If it were my gun I would take the block out and see that the pin hole is not wallowed out (just install the pin in the block outside the frame). Would be nice to try a new block ($15) but they don't seem to be available. Edited July 28, 2014 by mcracco Link to comment Share on other sites More sharing options...
ToneSurfer Posted August 23, 2014 Author Share Posted August 23, 2014 S&W called me yesterday after I have sent the gun back for a second time. Their story is still NOTHING wrong and the gun meets their specs. The CS rep says he went and inspected several other M&P that were in for repairs and several of them exhibited the same behavior. They didn't have an explanation for why my fellow shooters don't have guns with the problem. I told them I was unhappy but they really could give a ****. Gun is coming back with no repair. That settles it for me. My M&P Pro purchase is going to become a Glock 34. Link to comment Share on other sites More sharing options...
matt7184 Posted August 23, 2014 Share Posted August 23, 2014 Besides the wobble...how did the gun actually shoot? Link to comment Share on other sites More sharing options...
GtownGeorge Posted August 24, 2014 Share Posted August 24, 2014 +1 on "How does it shoot?" If it shoots fine and S&W says its within specs I really don't see an issue. Link to comment Share on other sites More sharing options...
ToneSurfer Posted August 25, 2014 Author Share Posted August 25, 2014 It shoots fine. I'm more concerned that 1) It don't seem right - a roll pin should not move in its hole and 2) It may get worse as things wiggle about. Link to comment Share on other sites More sharing options...
matt7184 Posted August 26, 2014 Share Posted August 26, 2014 So there is no issue. That is why S&W did not do anything. Link to comment Share on other sites More sharing options...
Vlad Posted August 26, 2014 Share Posted August 26, 2014 I'd say shoot it and keep an eye it. If the hole starts to wear or crack, send it back to S&W with a "how about now?" note Link to comment Share on other sites More sharing options...
pkm Posted August 26, 2014 Share Posted August 26, 2014 I haven't had that issue with the locking block but my sear housing block is rotating on one of my frames.. It is now in the junk pile, I am sorry but if it wasn't moving and now is something has changed. Link to comment Share on other sites More sharing options...
ToneSurfer Posted August 31, 2014 Author Share Posted August 31, 2014 I'd say shoot it and keep an eye it. If the hole starts to wear or crack, send it back to S&W with a "how about now?" note That's the plan.....it's also the only option I have at the moment. Link to comment Share on other sites More sharing options...
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