M and p shield issues

[Dad_Roman]

Never had any issues probably have 1500 round through it

This seems to be an oddity that it malfunctions in the middle of its life span. Right outta the box?...sure, but not after 1500 rounds.

Plenty of time over the weekend, no rush to pack it up.

This one's above my pay grade. I recommend you wait for Rastoff to finish thinkin about it. He will probably come up with something

 

[Smakmauz]

couple things...

Have you verified that there isn't some gunk or something binding up the slide stop a bit? doesn't take much resistance for it to fail to lock back on an empty mag.

Does the weapon have a magazine lock out feature?

Did you ever check what Cheapskait said about chambering a round and trying to fire without the mag in the well? obviously if you have one with a mag lockout this won't work anyway... but this will be a good diagnostic test if you don't have that feature.

also I don't see that you specifically answered him about weather the sear is properly moving up and down when you have it field stripped and pull the trigger.

 

[swsig]

...the trigger loop would not make contact with the sear. Either one of these events would prevent your Shield from firing....

I went back to your picture #2, and upon closer inspection, I can see that your trigger loop is offset from the sear far enough to the right (outside) that it won't make contact. Your gun won't fire when that happens.

For some reason, your magazine well has too much "wiggle room" that allows your magazines to be inserted too far to the right so that they interfere with the trigger bar. When I checked the inserted magazine on my Shield 9, I could not push it far enough to the right to affect my trigger bar. There must be some manufacturing defect in your Shield to allow that that to happen.

 

[Scubapro13]

couple things...

Have you verified that there isn't some gunk or something binding up the slide stop a bit? doesn't take much resistance for it to fail to lock back on an empty mag.

Does the weapon have a magazine lock out feature?

Did you ever check what Cheapskait said about chambering a round and trying to fire without the mag in the well? obviously if you have one with a mag lockout this won't work anyway... but this will be a good diagnostic test if you don't have that feature.

also I don't see that you specifically answered him about weather the sear is properly moving up and down when you have it field stripped and pull the trigger.

To answer both of them question it will fore a chambered magazine and yes the sear is moving up and down properly. I completely striped the gun yesterday before posting

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[Scubapro13]

To answer both of them question it will fore a chambered magazine and yes the sear is moving up and down properly. I completely striped the gun yesterday before posting

Sent from my VS995 using Tapatalk

*questions, *fire. Dann small buttons

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[Smakmauz]

I went back to your picture #2, and upon closer inspection, I can see that your trigger loop is offset from the sear far enough to the right (outside) that it won't make contact. Your gun won't fire when that happens.

I can see this as well... though it seems not very possible that a problem like this could stay hidden for 1500 rounds if it was a defect right from the factory

would you be able to post a pic that is taken from above the field stripped frame with no magazine looking down on top of the internals? basically just like the first one but with no mag in it. as clear as possible with a lot of light would be very helpful

we'll figure this out if we can!

 

[rwsmith]

With THAT kind of malfunction.....

Not firing with a magazine in is a catastrophic failure to operate in my book. I wouldn't mind trying to figure it out myself, but it would definitely go back to S&W if there is no quick resolution. You can't fire a shot, put in the mag, rack, remove the mag, fire and repeat.

 

[NewToGuns17]

Have you had the gun apart? In post #12, it looks like the roll pin below the takedown lever is pushed out slightly? I'm curious how after 1500 rounds this shows up in the gun, but i don't put anything past any product, ever. I would as well say a trip to S&W and see if they'll replace those followers that are chewed up.

 

[Scubapro13]

I can see this as well... though it seems not very possible that a problem like this could stay hidden for 1500 rounds if it was a defect right from the factory

would you be able to post a pic that is taken from above the field stripped frame with no magazine looking down on top of the internals? basically just like the first one but with no mag in it. as clear as possible with a lot of light would be very helpful

we'll figure this out if we can!

See pictures

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[Scubapro13]

Another good picture. If #1 is not correctly sitting on the magazine which forces the magazine into spot #2 which doesn't allow it to engage the sear #3

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[Smakmauz]

Great pics Scuba!

unfortunately I didn't get any hints as to what the problem could be

on the last one it literally looks like there's something tweaking the mag over. I can't see anything in the other pics that would cause something like that... they all look pretty perfect to me. I was thinking that if the trigger bar got bent or something from slamming a mag in that it could cause some of the problem but It looks good.

If you hadn't already said you grabbed another new mag, I would say pretty definitively that it was a magazine problem. I've tried to replicate the problem in my 9mm shield but I can't tweak my mag over far enough to make it happen. I suspect that's probably because the .40 has a little less room in the cavity being that the feed lip area is a little wider on the .40 so its probably easier to re-create that issue.

unless you got the weirdest luck and happened to get a bad mag off the shelf that could create the same issue... which isn't impossible but... whats that saying...once you've exhausted all probabilities whats left, however impossible it might seem, must be the truth.... (I know I butchered that one..)

if you have a local gun store with some cool people who work there, maybe see if you can pop a couple in and check it out.

other than that bro I think I'm gonna have to throw in my hat on this one and say you may very well have to send it in.

Good luck, and keep us updated as to what you find... I'm really curious to find out what happens!

 

[Cheapskait]

Wow! All I can think of is either both of your magazines are bent or distorted in the same way (haven't driven over them by accident?) which isn't easy to do or the mag well as a whole is misaligned, which I suppose could possibly happen if the mold at the factory broke or something, but that doesn't explain how you could put 1500 rounds through it before it stopped working.

Any physical force capable of distorting the frame like that would break it first. A mystery!

You didn't chuck it into a deep fat fryer because you figured it was an easy way to clean it?

 

[swsig]

Thanks for the new pics. I spent a fair amount of time with my nose up against my monitor trying to spot differences between your Shield and mine. I couldn't find any. The only thing I couldn't see was whether or not your slide stop tab (the one that makes contact with the magazine follower) might have been bent down. In such a case it might not extend far enough to reach the surface of the follower's slide stop activator, and would cause the front corner of your follower to be gouged as shown in your picture #2. It would also push your magazine to the right side. However, that tab is pretty stout, and it's hard to imagine that it could be bent through normal use, so this idea is a long shot at best.

Finally, there is the magazine latch. With my magazine fully inserted, I could almost replicate your picture #2 if I pushed in the magazine release button and simultaneously pushed the magazine to the right. By doing so, I could get enough wiggle room so that the magazine pressed on the trigger bar enough so that the trigger loop and the sear would no longer make contact. However the slide stop tab was still in contact with the follower.
Previously, I had thought the magazine latch might be a problem, but discarded that idea because you didn't report any problems with magazine retention. Is it possible that a defective magazine latch could keep the magazine from falling out, while allowing it to veer to the right? I don't know, but that's all I have.

I hope you can get this resolved soon. And when you do, let us know. This is one of the more perplexing mysteries we've had on the Forum lately. Inquiring minds want to know!

 

[Rastoff]

Here's another tid bit:
[ame]https://www.youtube.com/watch?v=5_RoDAOQGnQ[/ame]

I have tried with my Shield and I cannot duplicate what your pictures show. I can press on the magazine as hard as I want and it will not touch the trigger bar. This leads me to think your mag well is not shaped properly.

Send it to S&W. It's free and usually takes about 2 weeks.