New 9mm M&P Shield - slide getting jammed back.

[True_Precision_Inc]

The points which cause the hangup are pointed out in the below pics. The inside of the slide as well as the small point on the barrel shown are too tight. This has caused the metal on the inside of the slide to mishape (the barrel also has smaller marks as shown where it is catching). The barrel we believe is a bit more hard than the slide causing the slide to show more wear. This was also demonstrated in some of our early barrels and we corrected that area of the barrel shown from the factory. Ours do not catch now.

 

[Bassyaks]

Great post, thanks

 

[gqllc007]

The points which cause the hangup are pointed out in the below pics. The inside of the slide as well as the small point on the barrel shown are too tight. This has caused the metal on the inside of the slide to mishape (the barrel also has smaller marks as shown where it is catching). The barrel we believe is a bit more hard than the slide causing the slide to show more wear. This was also demonstrated in some of our early barrels and we corrected that area of the barrel shown from the factory. Ours do not catch now.

So all your new Shield 9 barrels that are non threaded have that fixed? How is your chamber? Can you carry with this barrel? I have a PC that I wouldn't mind changing the barrel as long as it would be reliable enough to carry with. My stock barrel is very accurate. I have a non ported shield factory barrel but it's not as close to accurate as the stock ported barrel. Both oem barrels have functioned 100%

 

[True_Precision_Inc]

So all your new Shield 9 barrels that are non threaded have that fixed? How is your chamber? Can you carry with this barrel? I have a PC that I wouldn't mind changing the barrel as long as it would be reliable enough to carry with. My stock barrel is very accurate. I have a non ported shield factory barrel but it's not as close to accurate as the stock ported barrel. Both oem barrels have functioned 100%

Both our threaded and non-threaded have the fix at this point. Our barrels are fully supported match barrels we have ran a good variety of ammo through them to include good amounts of Gold Dot and HST with great results in both accuracy and reliability with the ammo. Especially after the adjustment to the barrel. At this point they run flawlessly. Our machinists are amazing and the Concentricity of the bore (ID to OD) is one of the most important things to us and is huge when threading a barrel for a suppressor. The blanks are bored and rifled by a company that has produced barrels/blanks for several companies that are considered "high end" pistols and are well known.

 

[gqllc007]

Both our threaded and non-threaded have the fix at this point. Our barrels are fully supported match barrels we have ran a good variety of ammo through them to include good amounts of Gold Dot and HST with great results in both accuracy and reliability with the ammo. Especially after the adjustment to the barrel. At this point they run flawlessly. Our machinists are amazing and the Concentricity of the bore (ID to OD) is one of the most important things to us and is huge when threading a barrel for a suppressor. The blanks are bored and rifled by a company that has produced barrels/blanks for several companies that are considered "high end" pistols and are well known.

Ok I took your word for it and ordered a DLC coated non threaded barrel. Order number #00040

 

[speedyquad]

I did not fully clean it prior to going to the range, I was too excited to try it out. When I got home I did clean it. I am going to try to make it back to the range later this week and see if I still have the problem.
Thanks for all the quick replies.

That may very well have been the issue. They are shipped in a packing grease that is not a lubricant.

I'm not saying that the other issue isn't happening either. But until you have a chance to test it out under operating conditions, it's one solution at a time.

 

[thomast]

The points which cause the hangup are pointed out in the below pics. The inside of the slide as well as the small point on the barrel shown are too tight. This has caused the metal on the inside of the slide to mishape (the barrel also has smaller marks as shown where it is catching). The barrel we believe is a bit more hard than the slide causing the slide to show more wear. This was also demonstrated in some of our early barrels and we corrected that area of the barrel shown from the factory. Ours do not catch now.

Good stuff!

 

[rwsmith]

The stuff they ship guns with.....

......is sticky preservative, not lubricant. You gotta clean all that mess out. It's not as bad as cosmoline that they used to pack up rifles for years, but the idea is the same.

 

[vicikid62]

The points which cause the hangup are pointed out in the below pics. The inside of the slide as well as the small point on the barrel shown are too tight. This has caused the metal on the inside of the slide to mishape (the barrel also has smaller marks as shown where it is catching). The barrel we believe is a bit more hard than the slide causing the slide to show more wear. This was also demonstrated in some of our early barrels and we corrected that area of the barrel shown from the factory. Ours do not catch now.

Those points are where I see some machining from S&W on my 9mm shield that was recently sent in for repair due to the slide locking back during firing. The machining removed the black coloring of the barrel and the slide - should I be concerned about any enhanced susceptibility to corrosion?

 

[CB3]

The machining removed the black coloring of the barrel and the slide - should I be concerned about any enhanced susceptibility to corrosion?

No. They are both stainless steel.

 

[thomast]

This should be a sticky. It's a good fix

 

[Jimboy]

New 9mm Shield Issue

Looking for some help with a shield issue. On 2 separate occasions my 9mm M&P Shield failed to reset the stricker. The shell rejected and a new round was loaded but all I could do was press the trigger and nothing happened. 1st time about a month ago with Winchester target happened only once. Second time about a week ago with Remington. Gun is about year old and have had no problems before this.

 

[True_Precision_Inc]

Looking for some help with a shield issue. On 2 separate occasions my 9mm M&P Shield failed to reset the stricker. The shell rejected and a new round was loaded but all I could do was press the trigger and nothing happened. 1st time about a month ago with Winchester target happened only once. Second time about a week ago with Remington. Gun is about year old and have had no problems before this.

Sounds like the slide isn't going fully into battery. That will cause what you described to happen. If it occurs again pay close attention to the back of the slide and see if you can push it forward at all with your thumb...even just a hair movement forward means that it is not in full battery. This will cause the striker not to reset. There may be an obstruction somewhere preventing the slide from going forward or it could be bad/out of spec ammo/damaged case, etc keeping the round from chambering.

 

[jim46ok]

I did not fully clean it prior to going to the range, I was too excited to try it out. When I got home I did clean it. I am going to try to make it back to the range later this week and see if I still have the problem.
Thanks for all the quick replies.

To quote my old bootcamp commander..."a new article is a dirty article." One should ALWAYS clean a new firearm before firing. Issues such as a piece of milling debris, etc. present could damage the bore, sear, etc. JMHO

 

[jim46ok]

I have had my 9mm shield for over a year and 700 rounds through it, only problem I have is racking that slide. That puppy is strong!

Storing it with the slide back can take a little tension off....usually.

 

[MTB1]

Getting back to the original problem ... I have a new (~500 rounds) Shield 9mm CA model that has had the slide jammed passed slide lock once on about round 400. Once in 400 rounds is too many times for a CCW IMO. I called S&W and they promptly gave me an RMA. After waiting 1.5 months I received my weapon back yesterday with a note simply saying the problem could not be replicated and no action was taken. This is BS, and I am in a bit of a quandary as how to proceed at this point. It also guarantees I won't purchase another S&W.

Having read all the reports in this forum and others and I am convinced that there is a definite issue and S&W must be aware of it. Somebody mentioned a possible tooling issue above which makes sense as this is a relatively recent problem.

I think True_Precision_Inc might be onto something, but I inspected my barrel and slide and can't see any marks, but it only jammed once so far. It seems like the cleaning/lubrication fix is suspect, I just measured the recoil spring force at 9 lbs initially, and 13 lbs at full compression which is a lot.

Any suggestions? Can the slide and barrel base be safely ground in polished a bit in those areas indicated in the above pics?

Thanks for any help!

 

[sixtrings]

I am having the same problem. I started a thread on it above. I did note that when the slide sticks the barrel is fixed and has no "play" in it like it would when it is locked rearward by the slide lock. 10 weeks for a carry permit. Now another possibly 6-7 weeks to get this looked at. Not happy. Mine is sticking often enough that I have no doubt they will be able to replicate the problem though. Can barely get through a magazine without it happening.

 

[85V65Sabre]

I realize that nothing mechanical is perfect and anything that can go wrong will. My concern is that S&W doesn't seem to know what's happening with there 9mm Shield. [emoji25]

Luckily for us the folks over at True Precision have been gracious enough to help us out.

THANK YOU True Precision [emoji106]


Today is all we have, live it to the fullest!

 

[Clarke]

SAME DEAL HERE!

New M&P 9 Shield started getting stuck in the open position after only a few rounds. Immediately after purchase, cleaned and lubed per instructions and again, after it got stuck the first time.

Something is obviously effed up, because it's impossible to pull the slide back another millimeter, but a sharp rap on the rear of the slide will send it forward. This is obviously not the solution, so today I shall go to the range, and then call Smith & Wesson.

Imagine this happening in a situation where your life depends on it... you'd be DEAD!!

 

[Clarke]

I am having the same problem. I started a thread on it above. I did note that when the slide sticks the barrel is fixed and has no "play" in it like it would when it is locked rearward by the slide lock. 10 weeks for a carry permit. Now another possibly 6-7 weeks to get this looked at. Not happy. Mine is sticking often enough that I have no doubt they will be able to replicate the problem though. Can barely get through a magazine without it happening.

Exactly the same here, man!