Performance Shield Problems - MP-Pistol Forum

Performance Shield Problems

This is a discussion on Performance Shield Problems within the MP SHIELD Pistols forums, part of the Smith & Wesson MP Forum category; I am new to firearms and the Shield Performance is my first. I had the shield for about 4 months and took it out for ...


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Old November 25th, 2016, 05:21 PM   #1
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Performance Shield Problems

I am new to firearms and the Shield Performance is my first. I had the shield for about 4 months and took it out for a spin about 2 weeks ago. Without cleaning (out of the box it) and with an oiling I went to the range with white box Winchester.

Out of 150 rounds, I had 3 failures to lock back, 2 failures to fire and 2 jams. Additionally, my accuracy went from dead on and deteriorated to a bunch of flyaways. Needless to say, I was surprised considering the 100 reviews of reliability found on youtube. Is this normal ? Junk ammunition ? Both ? Or, should I be sending it back for adjustment. Let me you know your thoughts on how to move forward.
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Old November 25th, 2016, 08:01 PM   #2
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Welcome to our little corner of the net!

Main point, a new pistol should always be cleaned and lubricated before firing. Winchester White Box is usually pretty good ammo, but any of them can have a dud, and if you have a misfire, always double check your barrel before proceeding to make sure a bullet isn't stuck in it from a squib, its easy enough to do, a cleaning rod or a pencil can be used to check it without looking down the barrel. In addition, new pistols often need 200 to 300 rounds to break them in, not all of them require it, but some do. If your accuracy was going down hill, you could have been getting tired or you were developing some bad habits, more practice and make sure you are doing it correctly and not getting too tired.
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Old November 25th, 2016, 08:16 PM   #3
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Originally Posted by G56 View Post
Welcome to our little corner of the net!

Main point, a new pistol should always be cleaned and lubricated before firing. Winchester White Box is usually pretty good ammo, but any of them can have a dud, and if you have a misfire, always double check your barrel before proceeding to make sure a bullet isn't stuck in it from a squib, its easy enough to do, a cleaning rod or a pencil can be used to check it without looking down the barrel. In addition, new pistols often need 200 to 300 rounds to break them in, not all of them require it, but some do. If your accuracy was going down hill, you could have been getting tired or you were developing some bad habits, more practice and make sure you are doing it correctly and not getting too tired.
That about the failure to lock back ?
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Old November 25th, 2016, 09:01 PM   #4
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Originally Posted by jamerolle View Post
That about the failure to lock back ?
Among other things, its new, a little stiff, the springs are at their very most powerful point, they will soften somewhat with time and use, this is one reason pistols sometimes need to be 'broken in'.
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Old November 27th, 2016, 01:57 AM   #5
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I agree with G56 both my PC Shield were very stiff. My wife could barely lock the slide back. Give it a good cleaning and lube and shoot again. I use Winchester white box all the time it's good ammo and yes all ammo can have duds. Took about 500 rounds before the slide would release when loading a mag. These are tight little weapons when new. Does it lock back on the last round out of the mag? Keep shooting...
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Old November 27th, 2016, 01:43 PM   #6
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"I had 3 failures to lock back,"

If it failed to lock back on an empty mag then make sure your thumb isn't preventing the Slide Stop from moving up.

I had it happen to me the last time I was at the range...first time it's happened to me with the Shield...small gun & fat hands sometimes don't like to play well.
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Old November 27th, 2016, 02:01 PM   #7
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No, the failure to lock back is on the last round. I have no problem locking back (mag in) to clean the weapon. The failure to lock back on the last round happened a couple of times. Also concerning the accuracy , the assumption that I was tired is false. My first round went smooth however , as time went on I have no idea where were the bullets went, perhaps as highlighted above I was hitting the same holes I previously hit. For a gun known for reliability , accuracy and torcher testing I was very surprised from my experience. Then I read that from reviews of white box that other people have reported problems and a high level of fouling. So to summarize out of 200 rounds I had some misfiring meaning I pull the trigger and nothing happens , failures to lock back on the last round and some jams. Perhaps my failure the clean the shield out of the box lead to the problems. Finally, I like to know if all performance shields go through a firing inspection before they are sold ? I was looking for some evidence of an inspection but I found nothing in the box. I would like to believe the problem is me and not the shield, perhaps you guys can give me additional feedback. Thanks for the help thus far.
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Old November 27th, 2016, 03:41 PM   #8
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Quote:
Originally Posted by jamerolle View Post
I am new to firearms and the Shield Performance is my first. I had the shield for about 4 months and took it out for a spin about 2 weeks ago. Without cleaning (out of the box it) and with an oiling I went to the range with white box Winchester.

Out of 150 rounds, I had 3 failures to lock back, 2 failures to fire and 2 jams. Additionally, my accuracy went from dead on and deteriorated to a bunch of flyaways. Needless to say, I was surprised considering the 100 reviews of reliability found on youtube. Is this normal ? Junk ammunition ? Both ? Or, should I be sending it back for adjustment. Let me you know your thoughts on how to move forward.
NEVER shoot a brand new gun right out of the box...Clean & Lube it FIRST...!
I agree with all these guys that posted answers to your questions, take their advice jamerolle, its good advice.

EDIT: added comment
Also take into consideration, if its the performance center, "PORTED" model, some pressure is bled off from the porting.
This WILL definitely effect the slide slightly due to pressure bleeding off before the bullet leaves the barrel, thus softening slide reactions.

Last edited by PaPow; November 27th, 2016 at 03:47 PM.
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Old November 27th, 2016, 06:34 PM   #9
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ok thanks , see you on longislandfirearms
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Old November 27th, 2016, 08:21 PM   #10
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Personally, I don't worry too much about failure to lock back after the last round is fired, they all do that from time to time, some magazines do that a lot, I have some magazines, particularly in my 1911, that almost never lock the slide, it just happens, I don't worry about it. A lot of the experts say that it is always magazine related, and generally speaking (about a 1911) the better quality mags are much better at locking the slide back, but even the good expensive mags don't always lock back, I'm speaking about 1911's since there is a huge variety of aftermarket magazines available of various different qualities and a huge variety of prices, whereas on the M&P you are usually talking about factory mags.
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Old December 5th, 2016, 08:56 AM   #11
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Quote:
Originally Posted by jamerolle View Post
I am new to firearms and the Shield Performance is my first. I had the shield for about 4 months and took it out for a spin about 2 weeks ago. Without cleaning (out of the box it) and with an oiling I went to the range with white box Winchester.



Out of 150 rounds, I had 3 failures to lock back, 2 failures to fire and 2 jams. Additionally, my accuracy went from dead on and deteriorated to a bunch of flyaways. Needless to say, I was surprised considering the 100 reviews of reliability found on youtube. Is this normal ? Junk ammunition ? Both ? Or, should I be sending it back for adjustment. Let me you know your thoughts on how to move forward.


My 9mm Shield is 3 months old and I have put 400 Winchester "white box" through it with not one failure. I always clean and lube a new pistol out of the box.


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Old December 5th, 2016, 08:59 AM   #12
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I shoot the same ammo and have put 400+ rounds through my 3 month old Shield 9. No failures. I clean and lube out of box.


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Old December 5th, 2016, 02:54 PM   #13
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My 9mm Shield is 3 months old and I have put 400 Winchester "white box" through it with not one failure. I always clean and lube a new pistol out of the box.


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Ok , perhaps my problem was the lack of cleaning it before I lubed it and shot it. I never thought a gun that's never been shot out of the box is going to need cleaning. I don't remember reading that in manual ether.
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Old December 5th, 2016, 03:29 PM   #14
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Ok , perhaps my problem was the lack of cleaning it before I lubed it and shot it. I never thought a gun that's never been shot out of the box is going to need cleaning. I don't remember reading that in manual ether.
Clean and lube before shooting a new firearm is standard operating procedure.

In the Shield instruction manual it says:

Before using your firearm for the first time it should be cleaned.

Your firearm was treated with a preservative or oil to protect it during shipping and storage.

Preservative and oil should be wiped from the bore, chamber and exposed surfaces using a clean swab or patch before using the firearm.

It goes on to tell you how to clean and lubricate your new Shield. You will find similar advice in the owner's manual of virtually all new guns.
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Old December 5th, 2016, 04:03 PM   #15
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Yes to all of the above. WWB is on the weaker side. You should shoot something a bit stouter when breaking in a new firearm, so you can get a set on the springs. WWB is on the dirty side also.
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