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Discussion Starter · #1 · (Edited)
Looking for thoughts on an issue

Bottom line up front – New M&P 2.0 9MM, after 45 rounds the gun stopped automatically extracting, ejecting spent casing & attempting to load a new round in the chamber.

Situation: New M&P 2.0 9MM w/4” barrel, cleaned and lubricated, took to range the next day for Myself and 2 sons to shoot. Federal American Eagle 115Grain FMJ AMMO

Each of us alternate shooting the gun putting 30 rounds through it – I then take my next turn for 15 rounds. Son #2 in taking his next turn, inserts a mag, using the slide release advances the slide forward and takes a shot, BAM, gun works as advertised, then aims again, pulls trigger, click, no shot – he keep the gun pointed down range for 30 seconds, releases mag, pulls slide back and casing extracts/ejects from chamber. Son reinserts mag in order to continue firing, same things happens again, gun shoots then next attempt goes click, repeat clearing with same results as before. Son inserts a different mag and gets the same results.

At this point I think he maybe he is limp wristing it all of a sudden, so I take the gun and you can guess the results, same thing. At that point the range official come by and I describe the problem. He says to let him take the gun and he will look it over – he comes back about 10 minutes later and states he thinks the gun is a little dry, I reply, It’s a brand new gun and was cleaned and lubricated the night before, he then says, well since it is new, it is a break in thing and will probably be fine in about 500 rounds. I am thinking that I understand the break in thing but I do not believe that is the cause of this issue.

So at this point my other son ask if he can try it and yes he experienced the same issue, only this time after the first click, he manually racks and it fires, manually racks again and it fires, he does this for 5 shots, I then take the gun and do the same thing, shoot then manually rack for another 5 rounds. At this point we put the gun away and shoot a 380 we had brought along.

So for 45 rounds the gun worked as advertised, then the issue started. On the drive home I am thinking that in the process of firing was the gun not charging itself, then I think no, the trigger was resetting. Then I thought, how is it we were not getting a feeding issue since the spent casing was not being extracted, then I thought the gun could not have been feeding the next round, because when we cleared the gun, the only thing that fell out was the spent casing, no new round. So not only was it not extracting the spent casing it was not trying to chamber another round either. So I am looking for thoughts, ideas on what the problem maybe. Remember, 3 different shooters all experience the same issue.
 

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So I just want to be sure I understand. You are able to fire a round, the slide is cycling but the empty case is not ejecting?

If so I might be inclined to stay the extractor down with some cop and then manually see if I can move the extractor.

The extractor on my new 2.0 is tight like hell and dry as a bone. As part of my make a new gun ready for it's first outing I always hit it with clp. Rub it in with my fingers wipe off any external clp and then gently give a nudge to the extractor to insure it's moving and not bound up.
 

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It does not sound like the slide is cycling to me. Weak ammo will do that in a gun with stiff springs like a Shield. Was the ammo you had the problem with the same as the ammo that it ran fine on?


Sent from my iPhone using Tapatalk
 

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Discussion Starter · #4 ·
So I just want to be sure I understand. You are able to fire a round, the slide is cycling but the empty case is not ejecting?

If so I might be inclined to stay the extractor down with some cop and then manually see if I can move the extractor.

The extractor on my new 2.0 is tight like hell and dry as a bone. As part of my make a new gun ready for it's first outing I always hit it with clp. Rub it in with my fingers wipe off any external clp and then gently give a nudge to the extractor to insure it's moving and not bound up.
Boriqua, thanks for you input - I can only assume the slide is cycling because the trigger would reset. But yes, the spent casing does not extract from the chamber automatically - it will extract, eject and load a new round if you manually rack the gun though.
 

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Discussion Starter · #5 ·
It does not sound like the slide is cycling to me. Weak ammo will do that in a gun with stiff springs like a Shield. Was the ammo you had the problem with the same as the ammo that it ran fine on?


Sent from my iPhone using Tapatalk
Golphin, thanks for your input - My thought too was the slide was not automatically cycling, but then I remembered the trigger would reset, so that is why I sort of ruled that out ( I could be wrong though) - as far as the ammo is concerned, we used the same ammo the whole time, Federal American Eagle 115Grain FMJ.
 
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