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Old 08-10-2014, 12:25 AM
bckaroo bckaroo is offline
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Default Shield 9 slide jammed back

Hello, I'm brand new to the forum and this is my first thread. I purchased 9mm Shield and experienced a failure on the 76th round fired. The slide jammed all the way back past the slide stop, at the full extent of the cycle. I removed the magazine without any problems, no casings were stuck or jammed and after a two taps to the back of the slide it went back into battery. I now have a total of 200 rounds through it without the problem happening again. My question is that I was wondering if anybody else has experienced this type of malfunction? It seems like an odd malfunction to me. I contacted S&W and the tech I talked to had not heard of this problem but was going to check with another guy next week. Is this something I should have them check out or am I worrying to much? If it were your ccw what would you do? TIA.
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Old 08-10-2014, 10:28 AM
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I've been lucky soo far. I've only owned a few guns, and carried only 2 of them and have never had a failure whatsoever. I personally would be slightly nervous to carry a gun with a mysterious problem. But that's me. I'm sure others wouldn't think twice about it. Id send it in and have them take a "quick" look at it
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Old 08-10-2014, 10:48 AM
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When it was locked back, was the barrel rigid or could you move it a little?
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Old 08-10-2014, 10:50 AM
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What were you using for ammo?
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Old 08-10-2014, 11:05 AM
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First... Welcome to the forum!
I've heard of this with other brand pistols before, but not the Shield. In those instances, it was one of two things (with regular pressure ammo)...
1) there were signs of a slight burr either on the frame rails, or on the slide itself. Once the burr was smoothed, no more problems... Or
2) The Ejector (not to be confused with the Extractor) got bent behind the breech face. THIS though,would not have been freed up with only a couple taps to the rear of the slide.

Since you were able to run another 124 rounds down range after this incident, there's the possibility that there may have been a slight burr that hung yours up that got knocked off when you smacked the rear of the slide. Field strip it and check (feel) the slide and rails for any irregularities. If you can find signs of a burr (or that there WAS a burr that got knocked off), you at least have something to mention in a follow-up call to CS.

If it's your ONLY carry pistol, I wouldn't carry it until it's been tested some more (or sent back for a check), but I wouldn't be so quick to send it in. I'd run it through a mini 'torture test' of sorts.
I'd run at least another few Hundred rounds of FMJ through it to see if it happens again... Quick doubles, triples and 5-7 bursts of rapid fire (if your range allows it)... don't be easy on it. If it's Jam Free after another 200-300 round 'torture test', it could have simply been a fluke that might never happen again. THEN I'd start experimenting with various brands of JHP carry ammo to see which your pistol (and you) like.
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Old 08-10-2014, 11:08 AM
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Excellent reply Rob thanks
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Old 08-10-2014, 11:15 AM
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Strange but anything is possible. Since it was jammed past the slide lock, we can rule that out. I doubt this is the issue, but pull the slide and check the front of the stopping block for damage and the bottom inside front of the slide. My guess is a piece of brass, off the shell casing, got lodged in the rails, and held the slide open. The extractor claw might have ripped off a small section of a weak area on the rim. Not likely but what other reasons could have caused this condition. A possible binding recoil spring, but that would not likely have held the slide at the fully back position. Upon forcing the slide forward, whatever was lodged in the rails was dislodged and the gun went back to function as per normal.

Bob
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Old 08-10-2014, 02:45 PM
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My guess and it is simply a guess, is a tight fitting slide and a bit of whatever jammed in wrong place. My shield 9mm had an extremely tight slide fit and would jam even after smith replaced extractor. Jam not like your jam however, but rather expended brass left in ejection port.

I simply hand cycled slide fully to rear and eased forward many hundred time. Also periodically put on more lube. There was visible wearing in and so far for about 500 rounds no problem.

Now with a glock I had a more similar problem to yours. Slide jammed tight on new gun, I broke loose, cleaned and lubed and several thousands of round later no problem.

Last edited by davemercer; 08-10-2014 at 02:49 PM.
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Old 08-10-2014, 04:48 PM
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Old 08-10-2014, 05:21 PM
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Welcome from Wisconsin! I'm sorry you had trouble with your Shield but many times problems have a way of working themselves out. It might be as simple as your pistol just needs breaking in. Many don't but some do with tight tolerances causing a problem. Be on the safe side. Shoot a couple hundred more rounds through it & if it doesn't reoccur then there really is no problem. Try different ammo types including self defense rounds that you want to use. Hopefully S&W will call back with possible solutions & a way of correcting the problem. If it takes a trip back to the factory for your pistol then so be it. You have to trust your carry SD weapon otherwise you might just as well carry a short club.
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Old 08-10-2014, 08:52 PM
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Wow! you guys are awesome. What a wealth of knowledge
bmb96mus. I was thinking a factory check wouldn't hurt anything but 3-4 weeks is a long time if its not a big deal.
Rastoff. To tell you the truth i did not notice either way. I didn't even think to check that.
turbo38gn. I was using Federal 115 gr FMJs when it happened.
RobzGuns. Wow thanks for the extensive reply. Since my ejector seems to be in good order I'm thinking your first scenario is my problem. While not being my only carry pistol it is my smallest and most COMFORTABLE. Looks like its time to put this small pistol through some hard firing. Ive fired 25 rounds of Hornady Critical Duty 135gr FlexLock without any problems. How many HPs before you are satisfied with their reliability?
robkarrob. Slide's stopping block seems to be fine. I can't see any obvious deformations. I wish I had another shield to compare to though. A piece of brass was what I thought of first but i wasn't sure if it was possible.
davemercer. I have tried to find information on this type of jam and not had any success. Its relieving to hear you had one with a glock and it ended up being fine.
mustangman. Thank you and greetings from NV.
MSG Glenn. I had researched and heard of shields firing multi-thousands of rounds without problems and was surprised with a jam. I completely agree with having trust in a SD weapon. I hope to hear from S&W CS soon.
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Old 08-10-2014, 10:25 PM
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Quote:
Originally Posted by bckaroo View Post
Rastoff. To tell you the truth i did not notice either way. I didn't even think to check that.
First of all, thank you for answering the question (all of them). You will continue to find this site very helpful.

I asked about the barrel because it is one potential cause of what you had. Allow me to explain...

As the slide moves backward, the barrel moves toward the rear a little, then drops/tilts down. If for some reason, the barrel doesn't move back far enough, it will be pinched between the slide and the frame. The result is a slide that won't move either way. Depending on how stuck it is, will determine what is necessary to free it. Yours wasn't stuck bad.

Try this; lock the slide back on an empty chamber. Now, wiggle the barrel a little. It should seem quite sloppy. The barrel should feel loose. This is normal. That movement actually helps the feeding process.

I have seen your situation a couple of times and each time it was due to the barrel getting wedged in there. The fix was to bump the barrel on the muzzle to dislodge it. In each case the malfunction has not returned that I know of.
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Old 08-11-2014, 12:19 AM
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I have never heard of this type of problem before. I wonder if this was the same type of issue davemercer had with the glock that he mentioned. It would be fantastic if it was some sort of freak malfunction that never arose again. Thanx for the information.
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Old 08-21-2016, 02:10 PM
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Quote:
Originally Posted by turbo38gn View Post
Excellent reply Rob thanks
I have recently bought 9mm shield and had the same problem with the slides sticking back my wife's did it four times in three clips and mine did it once and for clips! Brand new guns first time shooting them! I could by hand pull it back and get the slide to stick back! We have shot since then with no problems. Hard to trust the gun! Should we send back to get the slides redone??? Confused and worried!
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Old 08-21-2016, 11:14 PM
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this also started to happen with mine. I've shot about 1,000 rounds through mine and just recently (occasionally) my slide sticks open. I have to sling shot it really hard to get it to close. I'm wondering if I have a burr on one of the rails somewhere. It almost seems like the slide release gets hung up
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Old 08-22-2016, 12:09 AM
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Quote:
Originally Posted by Chadtank View Post
I have recently bought 9mm shield and had the same problem with the slides sticking back my wife's did it four times in three clips and mine did it once and for clips! Brand new guns first time shooting them! I could by hand pull it back and get the slide to stick back! We have shot since then with no problems. Hard to trust the gun! Should we send back to get the slides redone??? Confused and worried!
I'd recommend getting someone who is an experienced shooter to try it. I get the impression from your post that you are very new to shooting. From your description, I don't get any sense of what might be happening, you could send it back, but it would be a shame to do that, wait for it to come back, and have S&W say, "operates normally".

Another suggestion, if you want help on a problem, start a new thread instead of tacking a question on the end of a 2 year old discussion.
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Old 08-22-2016, 05:26 PM
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So I had bought one of the SS guide rod replacements when I
Initially bought my shield (a lot of people were having problems with theirs)
and it's been sitting in these.
Until today, today I went to the range shot 50 rounds of Federa
l Aluminum 115gr (my shield eats this stuff up, for $20.00 a 100 rounds? I'll take it).
The Lockup occurred twice. Again I just sling shot with some
"oomph" and good to go.
My shield used to slam shut with a round chambered if I shoved
in a mag hard enough almost all the time.
I also noticed that this was happening less frequently now along with the slide locking open.
So... I popped out the stock guide rod assembly and dropped in the SS one. No lock ups and my slide closed and racked a round on almost every hard mag insertion. I really didn't feel any difference in recoil management between the 2 assemblies, but I did notice racking the slide to be a little smoother and a bit easier. So I'm wondering if it's an issue with the spring getting caught (bunch up somehow) or if there is dirt inside of the stock guide rod assembly causing it to hang up.
I'm going to clean it as thoroughly as possible tonight and head back out to the range tomorrow with some 115, 124 and 147 gr ammo and do some more "field recon". I'm off this week so I have the opportunity. I'd like to stick with the stock parts if possible, if I can get my hands on a new Stock guide rod assembly I'd love to do a comparison.
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Old 08-27-2016, 12:08 PM
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Ok problem with mine was not the spring. Take a look at the top of my barrel.

the barrel does not drop low enough when the slide goes back. My gunsmith just smoothed this out and rounded the top inside of the slide where this was getting caught up. he said he had never seen this before. I sent this picture to Smith and Wesson and they said it looked like normal wear...................hardly.
I have about 1,000 rounds through this gun.
Now it is functioning fine, but I will keep an eye on this to see if it
starts to dig in again.
Take a look at the top of your barrel and see if there is a "ledge" being dug into the top of it.
If it's new and it's sticking tap the end of the barrel with a rubber mallet when the slide is locked back.
If it pops shut (like mine did) you may be looking at a similar issue as I have here.

Last edited by kmanick; 08-27-2016 at 12:09 PM.
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Old 08-27-2016, 05:44 PM
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That sharp wear line is NOT " normal " for a Shield. It IS typical to get some wear in that area on top of the barrel just over the ramp... but NOT a sharp line like that. JMHO
I'm not a gunsmith, but that ain't right.
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Old 08-27-2016, 07:08 PM
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Quote:
Originally Posted by kannonvaggon View Post
That sharp wear line is NOT " normal " for a Shield. It IS typical to get some wear in that area on top of the barrel just over the ramp... but NOT a sharp line like that. JMHO
I'm not a gunsmith, but that ain't right.
No it's not my gunsmith agreed. I'm keeping an eye on it (I shoot this gun a lot)to see if it starts to develop again (he smoothed everything out today)
I wonder if I can gt a Shield 9mm Barrel?

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Old 08-27-2016, 08:58 PM
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Quote:
Originally Posted by kmanick View Post
Ok problem with mine was not the spring. Take a look at the top of my barrel.

the barrel does not drop low enough when the slide goes back. My gunsmith just smoothed this out and rounded the top inside of the slide where this was getting caught up. he said he had never seen this before. I sent this picture to Smith and Wesson and they said it looked like normal wear...................hardly.
I have about 1,000 rounds through this gun.
Now it is functioning fine, but I will keep an eye on this to see if it
starts to dig in again.
Take a look at the top of your barrel and see if there is a "ledge" being dug into the top of it.
If it's new and it's sticking tap the end of the barrel with a rubber mallet when the slide is locked back.
If it pops shut (like mine did) you may be looking at a similar issue as I have here.
Call back s&w. They need to replace this one
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Old 08-27-2016, 10:25 PM
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it's all smoothed out now so I am going to keep an eye on it. I shot 50 rounds through it today and so far so good.
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Old 08-28-2016, 11:19 AM
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Did the gunsmith look at the lug? If the barrel/chamber is being pressed up against the slide, and that's what's causing the gouge in the top of the barrel/chamber, then it's an issue on the bottom of the barrel; most likely the lug. Some material may need to be removed to make it fit correctly, but not from the top.
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Old 08-28-2016, 04:33 PM
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he did not, I'm actually on my way to the range right now. I'm going to
keep an eye on it.
I sent this picture to S&W and requested a new barrel, I hope they don't blow me off.
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Old 11-11-2016, 02:05 PM
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I just purchased the Shield Performance Center 9mm and this happened to me on the range today. I got through 2 clips and the slide locked up and I could not get it to move forward. Very disappointing and worrisome as I purchased this to be my carry gun. Got home and somehow got the slide to move forward so field stripped. It does seem like Rastoff's post might be on to something since the slide was really stuck and I could not get the slide to budge at the range. Seems to be fine now so will hit the range again this weekend to see if it happens again.
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Old 11-11-2016, 09:45 PM
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I too just purchased a 9 mm Performance Center Shield and took it to the range for the first time today. I was shooting 115 grain Blazer Brass FMJ. Halfway through the 3rd or 4th magazine, the slide locked to the rear and wouldn't budge. I released the magazine and fiddled with it for awhile, inserting empty magazines, etc. and finally got the slide released. I fired another 3 or 4 magazines and it locked up again.
Once at home I fiddled with it some more and finally got the slide released and attempted to field strip. I had a heck of a time getting the slide locked back. The slide lock lever didn't want to move. Finally got it stripped down and cleaned and lubed. After reassembly, everything seems to function properly, but have not shot it yet...hopefully this weekend.
There is definitely something going on with these pistols.
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Old 11-11-2016, 10:44 PM
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We've heard of a few of these recently. I wish someone would post a pic of the gun locked back.
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Old 11-11-2016, 10:55 PM
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I haven't had any issues with mine locking back but did notice that when racking the slide back it wasn't completely smooth, every time then slide was pulled it would make a weird sound. I polished the barrel and now it works super smooth.
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Old 11-11-2016, 11:43 PM
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After field stripping and cleaning I was anxious to see how it would perform so hit the range earlier today. I still had the issue with the slide locking to the back. It seemed to do this toward the end of the magazine (8rd around the 7th and 7rd around the 6th) so I released the magazine and did what Rastoff suggested and bumped the muzzle against the pad at the range and it seemed to release it every time. Was still frustrated it was happening but at least I was able to get it back to normal to shoot more rounds through it. It seemed to be getting a little better after shooting more rounds as I noticed it was finally getting through a full magazine and not locking up on the last round. Still confused as to whether it could be what Rastoff was saying the barrel getting pinched or a problem with the feeding from the magazine. I am guessing more of a pinch problem. Rastoff I plan on hitting the range again this weekend so if it does the same problem I will take pics and post. I am also going to call S&W on Monday to report the issue and see what they say. Sorry for the long post

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Old 11-12-2016, 12:21 AM
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If bumping he muzzle releases the locked slide, I'm almost positive it's the chamber/barrel lug that's getting wedged in the slide somehow. I'd love to see it in person.
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Old 11-12-2016, 04:02 AM
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Default It's now simple......

After reading the excellent posts and you having done what was reasonably possible, the Mother Ship is the answer. Calling them is always the best way to contact them. They will send you a shipping label and it goes to the factory. If it's a defect they may fix it for free and these are turned around fairly quickly and you should have your gun back in about two weeks tops. You may want to include the picture in the package. They usually want to see the whole gun and are unlikely to send a barrel because if that's not the problem it's a waste of everybody's time and money.

If the slide is sticking back with nothing visibly wrong, it's not right and needs to be checked.

I had an older Shield and complained of a too tight chamber. I sent them the gun and about 10 days later it was back with a new barrel.
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Old 11-12-2016, 11:01 AM
mclem mclem is offline
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I have to agree with you Rastoff that it is a pinching problem possibly during the ejection process since the slide goes further back than the normal slide lock and I can physically see the next round in the magazine which could not get loaded. Rwsmith you are right it needs to get checked by S&W and appreciate the information you provided in dealing with them. I will also update after speaking to S&W on their thoughts and if they have heard about this issue before. Thanks to everyone for the guidance.
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Old 11-13-2016, 11:16 AM
mclem mclem is offline
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Went to the range yesterday and put about 100 rounds through it and it performed flawlessly. It fired accurately and going through magazine after magazine showed me why this is such an awesome little gun. Just need to get over this slide issue. Still going to call S&W and see what they have to say.
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Old 11-14-2016, 03:55 PM
teebiss teebiss is offline
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Hi everyone, new member here from Reno NV.

I recently bought a new S&W M&P Shield 9mm from Cabela's here in Reno. On my first trip to the range I experienced, several times, the same issue that others here have described: my slide would lock way back, past the slide stop/lock, in the furthest rearward position. A heavy tap forward on the back of slide would cause the slide to return to battery.

I sent my new pistol back to S&W about 3 weeks ago. Today I contacted customer support--they told me that the smiths replaced my barrel. I got my shipping notification this afternoon.

Hopefully it's been fixed. I just wanted to let everyone know that this issue is definitely a thing.
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Old 11-14-2016, 06:34 PM
mclem mclem is offline
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Teebiss thanks for the information.

I just contacted S&W and told them about the issue and asked if they have heard of this before. I received the typical customer service answer of no, sounds like an anomaly and that I should send it in to get looked at. I just got my shipping label So will be sending it off.
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Old 11-20-2016, 01:44 PM
Patton1970 Patton1970 is offline
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I just purchased my 9mm Shield last week and yesterday took it out to the range. I had this same sticking slide issue three times in 200 rounds. A couple of taps on the rear of the slide would dislodge it. It became very obvious the slide was binding somewhere. Unloaded cartridges were still in the magazine, and the slide lock was not engaged.
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Old 11-22-2016, 11:15 AM
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Patton thanks for sharing. There definitely seems to be some sort of issue as we should not have to be tapping the slide or muzzle for it to operate properly. I sent my gun in last week and just received my RMA number today. I say don't take any chances and send it back to S&W to get looked at and/or repaired. Hopefully S&W sees there is an issue if quite a few people are having the same problem. Just my 2 cents.
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  #38  
Old 11-26-2016, 06:09 PM
Lmbrouvx Lmbrouvx is offline
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Quote:
Originally Posted by Rastoff View Post
We've heard of a few of these recently. I wish someone would post a pic of the gun locked back.
Just got some. I hope they are good enough. I wasnt sure what exactly to take pics of. I also took a short video that may or may not be helpful. I dont know the prefered merhod of uploading pics without slowing the threads load time, or making multiple posts Been a very long time since ive used a forum.


Im not too new to firearms but i know i dont have the level of knowledge i should or know all the proper teminology so bear with me.

This is my second 9mm shield. My first never had this issue. This one purchased new, brought it home and cleaned/oiled everything prior to firing the first time. 3 days ago was the first to shoot it. It made it through 3 rounds before the slide stuck all the way back. No play in it to get it to release so you have to hit the back of the slide to return it to battery. Another 2-3 rounds and it did it again. Took it apart to see if anything stood out as being off, or catching and didnt see anything so I re-oiled it and tried again. This time it would get through all but the second round. I showed it to a couple shield owners and they were clueless as well as to what may be causing it.

Took it apart today to check it over again to see if i missed something and there was one thing that stood out to me. Im not sure what this part is, whether its slide guides or what its proper name is but it will be my first 2 images. On the top is normal smooth wear, but on one side there is a gouge, but i cant see anything on the slide that could be causing this. Took it out and made it through 30 some rounds without issue before it locked up again. One of the images i have the slide lock pushed up to show how far back it is sitting.
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  #39  
Old 11-26-2016, 06:15 PM
Lmbrouvx Lmbrouvx is offline
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A few more images. Is there a way to upload a video to this forum?
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Old 11-26-2016, 06:45 PM
Steve912 Steve912 is offline
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Examine the camming surfaces on barrel and locking block...check fit with loose barrel and slide-less frame.
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Old 11-27-2016, 03:27 PM
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Lmbrouvx,
Really excellent pictures. Those help a lot. However, can you get a picture of your barrel lug like this:



The thing the arrow is pointing to is the barrel lug. The surface it's pointing to should be smooth and have no machine marks or aberrations at all.
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Old 11-27-2016, 05:33 PM
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Well, this thread concerns me. I'll be taking ownership of a new Shield 9mm I ordered on Black Friday. For such high reviews there sure seems to be a lot of QC issues that keep popping up.
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Old 11-27-2016, 06:45 PM
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Quote:
Originally Posted by opaul View Post
Well, this thread concerns me. I'll be taking ownership of a new Shield 9mm I ordered on Black Friday. For such high reviews there sure seems to be a lot of QC issues that keep popping up.
I would not worry. I have not had my Shield but a few months but have about 300 rounds through it with nary a hiccup. The vast majority have no problems.
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Old 11-27-2016, 07:28 PM
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Quote:
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Well, this thread concerns me. I'll be taking ownership of a new Shield 9mm I ordered on Black Friday. For such high reviews there sure seems to be a lot of QC issues that keep popping up.
Why? Because you read about 5 having a problem on the internet? No, I wouldn't worry. S&W has made over a million of the little buggers. If you took all the problems and put them together, they would add up to less than .01% so, nothing to worry about.

And if you do have an issue, S&W will fix it for free and their turn around is quick.
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Old 11-27-2016, 07:51 PM
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Quote:
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Why? Because you read about 5 having a problem on the internet? No, I wouldn't worry. S&W has made over a million of the little buggers. If you took all the problems and put them together, they would add up to less than .01% so, nothing to worry about.

And if you do have an issue, S&W will fix it for free and their turn around is quick.
What he said.

You'll be glad you bought a Shield.
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Old 11-27-2016, 07:58 PM
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Problems that cause a gun not to function that repeat, send that sucker back!!!! You don't want that thing failing when you need it. it will be too late!

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Old 11-27-2016, 07:59 PM
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Old 11-28-2016, 12:59 PM
Lmbrouvx Lmbrouvx is offline
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Quote:
Originally Posted by Rastoff View Post
Lmbrouvx,
Really excellent pictures. Those help a lot. However, can you get a picture of your barrel lug like this:



The thing the arrow is pointing to is the barrel lug. The surface it's pointing to should be smooth and have no machine marks or aberrations at all.

Absolutley. Itll be this evening though. There is something else i noticed last night while examining the slide trying to find a burr that could have caused anything.
This doesnt look like normal wear to me and the same side that has the gouge on that internal piece is worse than the other but both sides have the same marks. It is a little rough, but really the only way this could have caused the gouge would be if it "jumped track" but i really dont think thats possible? What do you think these marks could be from and could this be part of the issue or is this normal wear? I ran more rounds through it last night without issue. So it seems like whatever it is smoothed out but im hoping this will help track down what it is for any others that have this rare issue.

To Opaul, i really would not worry. I know several officers that carry these at work and CCs with shields that have never once had an issue and all highly recommend them. These are excellent guns and you will be glad you got it. Whatever this is, is rare. I found hardly anything on it till i found this forum.

The first picture is the opposite side of the little gouge, and then 3 of the one side that seems worse to show it a little better. The little pits/ chips are right on the edge.
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  #49  
Old 11-28-2016, 01:15 PM
Patton1970 Patton1970 is offline
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Quote:
Originally Posted by mclem View Post
Patton thanks for sharing. There definitely seems to be some sort of issue as we should not have to be tapping the slide or muzzle for it to operate properly. I sent my gun in last week and just received my RMA number today. I say don't take any chances and send it back to S&W to get looked at and/or repaired. Hopefully S&W sees there is an issue if quite a few people are having the same problem. Just my 2 cents.
I agree, no reason to procrastinate. Last Monday I called S&W and spoke with a customer rep. He was very polite and after a brief conversation about the slide jamming, he issued me a RMA Label via email. I contacted FED EXP and they picked the firearm up that same afternoon. The firearm arrived S&W last Friday. Once I get some feedback from S&W I will post the results.
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Old 11-28-2016, 01:36 PM
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First time poster, came across this thread via a Google search. We bought the Shield 9mm for my wife last week on a black Friday sale. In the first 2 magazines, we had 2 failures to return to battery on a full mag (after chambering the first round) and 2 jams with the slide all the way back. It was not due to the slide lock lever, as it was past that point. A sharp rap on the back of the slide cleared the jam, but it didn't inspire a lot of confidence in the firearm. I spoke to a friend about it and he said that although we received the gun with plenty of visible oil on the slide and inner workings, that it may have been corrosion prevention oil for shipping/storage and not really well lubricated. Although that makes some sense, my other guns have just worked out of the box, so I didn't feel it should come out of the box in a condition that wasn't ready to fire. At any rate, I cleaned it thoroughly and lubricated it according to the manual, with an extra drip on the inside of the slide where the trigger connector rubs, and ran another 50 rounds or so through it this morning with no issues. I hope that's the last of the issues.
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