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Discussion Starter #1
So i picked up my first gun in my name yesterday which was a new MP9. Didnt test shoot it. (yeah i know...) Anyways i got it home and gave it a cleaning and lubed it to spec. I go to load some hydro shocks and chamber a round to see how the indicator works and.......nothing. The round just hangs up on the tube ramp EVERY round. (please excuse my ignorance of the correct terms)......So i try some fmj's. Same thing....If i rack the slide back a couple times or 'coax' the slide forward it will chamber but its not happy about it...This is sad becuase every other gun i've shot is smooth as butter loading that first round.



So my question is, Since I havent shot it, should i take it back to the dealer and walk away from MP's? Or am i doing something totally wrong...
 

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A Coupla Things...

Sorry to hear youre having some difficulties. Lets take a look at a couple of things first.



First off, are you assisting the slide forward or letting it drop freely? Try just pulling the slide back instead of using the slide release.



Secondly, are the rounds catching on the lip of the ramp or the lip of the magazine?



Either way, something is not right but it will help to start isolating the problem. If its the ramp, a polishing may help. The magazine...maybe just a bit of honing.



If nothing else, send it back to S&W and tell em it just isnt right.



Good luck!!



-J



_Edit_ Sorry, forgot to mention that a buddy of mine was having the same issue. He worked through it by using different ammo and eventually no longer had a problem.
 

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Discussion Starter #3
Re: A Coupla Things...

F15-Loader said:
Sorry to hear youre having some difficulties. Lets take a look at a couple of things first.



First off, are you assisting the slide forward or letting it drop freely? Try just pulling the slide back instead of using the slide release.



Secondly, are the rounds catching on the lip of the ramp or the lip of the magazine?




I tried both assisting it and letting it drop. Also tried loading mags with the slide open and loading them then working the slide... I'm not too sure where they are binding up. I thought it was just at the bottom edge of the ramp but i'll check later and make sure. Whatever the solution is a think a trip back to the shop is in order. Thanks for the reply.
 

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It takes quite a bit of force to load a round from a brand new mag that is loaded to capacity. Here is what I would do before calling the dealer or S&W.



1) Make sure that you are not "riding" the slide down when it is trying to chamber a round. Either pull the slide back abrubtly and let it slip out of your hand or lock it back and release the slide lock.



2) Try loading the mag with 5-6 rounds and see if it will chamber a round.



One thing I would do if I where you is discard any rounds that have been "jammed" by the force of the slide. If the bullet is forced back into the casing it will cause high pressure in the round which may lead to a case failure!!



Let me know what comes of the above suggestions!!
 

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Re: A Coupla Things...

Dubs said:
Whatever the solution is a think a trip back to the shop is in order. Thanks for the reply.


I think I'd agree with ya but it sure does suck to be sending it back so soon after getting it. Hope it works out for you.



-J
 

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Discussion Starter #6
coltman1985 said:
It takes quite a bit of force to load a round from a brand new mag that is loaded to capacity. Here is what I would do before calling the dealer or S&W.



1) Make sure that you are not "riding" the slide down when it is trying to chamber a round. Either pull the slide back abrubtly and let it slip out of your hand or lock it back and release the slide lock.



2) Try loading the mag with 5-6 rounds and see if it will chamber a round.


Thats what i was thinking too, so i tried using 4 rounds, same things, then one, same thing, different mags, same thing. you get the idea.



Is there anyways i could have botched the reassembly?...It seemed straight forward but maybe i jacked something up.
 

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This has happened to me as well, but it does get better over time. The feed ramp is VERY steep, and some rounds, especially hollow points and flat nose bullets will "nose dive" into the ramp. This does not happen during actual fire due to the force of the blow-back, so I wouldn't worry about this being an issue. I do understand your initial concern though. If this does happen when you are racking the slide to chamber an initial round, just give the rear a slight tap with your open palm, and the slide will go forward and chamber your round. Good luck.
 

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Did you take the mags apart? Did you install the guiderod correctly? Does it feel like the sliding is binding or scraping when you open/close it?
 

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Discussion Starter #9
coltman1985 said:
Did you take the mags apart? Did you install the guiderod correctly?


I did take them apart...And im pretty sure i installed the guide back the way it was...will check
 

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Just checking the obvious...did you try more than one magazine?



Just in case something is not seated- try field stripping it again and then reassemble it.



What color are the followers on the mags? I believe the gray are the new ones and the black are the older version- not sure why they changed it.



I would go back to your shop, they may be able to give you more insight without needing to send it back.
 

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Discussion Starter #12
M&Pdoggy said:
Just checking the obvious...did you try more than one magazine?



Just in case something is not seated- try field stripping it again and then reassemble it.



What color are the followers on the mags? I believe the gray are the new ones and the black are the older version- not sure why they changed it.



I would go back to your shop, they may be able to give you more insight without needing to send it back.


I did try several mags...and stripping it again....I'm starting to think im not being rough enough with it. Could it just be the mags are tight and i need to rack the slide harder when loading?
 

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I would take it back to the place I purchased it and have them look it over.



It is my understanding that S&W runs TWO FULL MAG's through rapid fire followed by additional accuracy check rounds. I would be very surprised if one left their hands that wouldn't feed the first round properly.



Someone else may have broken it down and not put it back correctly.



Good luck.



:twisted:
 

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One more thought.



Is your ammo head stamped 9MM Luger?



There is other 9MM ammo out there.



9x21 and 9x18 come to mind.
 

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Discussion Starter #15
TOF said:
One more thought.



Is your ammo head stamped 9MM Luger?



There is other 9MM ammo out there.



9x21 and 9x18 come to mind.


Pretty sure it is..I'll check it out. I'd be supprised if he gave me something else. thanks
 

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The magazines for the M&P9 feed the rounds into the feedramp without much of an angle towards the chamber. Even AZoom Action Trainers - which are very slick and often slide into my G19 barrel ahead of the extractor - will grab at the feedramp while being fed. If your slide cycles rough and/or the rails on the frame are not properly lubed it may not be closing with full potential. If that's the case hopefully it will break in as you cycle it more and more.



You can polish the feedramp and see if that makes a difference. Go buy some Flitz polish, apply it to a Qtip, and rub it against the feedramp in an up-and-down motion (try not to get the polish in the chamber or anywhere else) and then clean it off with CLP when done. Flitz polishes slowly so you can do this in stages until you notice progress. I've done this to my G19 to help Ranger Talons feed smoother.
 

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Discussion Starter #18
UPDATE

They are lugers so thats a good start. Mag feeders are in correct. I tried racking the slide back with a little more conviction and things went in alright. Perhaps its because im used to shooting used guns that are probably nice and broken in. I'm going to go put some rounds through it and see whats what. Lets hope this is just a case of the noob. I'll let the range master put a couple down and see what he thinks.
 

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Sometimes it just takes a little more muscle!! Give us a range report when done shootin'!! :wink:
 
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