New Shield .45 auto forwarding - MP-Pistol Forum

New Shield .45 auto forwarding

This is a discussion on New Shield .45 auto forwarding within the MP SHIELD Pistols forums, part of the Smith & Wesson MP Forum category; I grew up with 1911s and I recently purchased a Shield .45 for cc. I've been to the range once and shot 250 rds without ...


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Old April 15th, 2017, 12:49 PM   #1
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Question New Shield .45 auto forwarding - FIXED!

I grew up with 1911s and I recently purchased a Shield .45 for cc. I've been to the range once and shot 250 rds without a FTF and it's very accurate for its size. Very satisfied so far and I think S&W has a winner here.

I did experience auto forwarding several times, when slamming in a full mag, the way I'm accustomed to doing with 1911s. I figured out that by cutting back on my slam, the slide will usually stay locked back. I've read a lot on the Internet about this issue and although it's not an issue to some shooters, I'd like to find a fix for this, since it makes me pause instinctively, when it happens.

Has anyone successfully addressed the auto forwarding? I'm studying that little slide lock tab inside the frame and I'm tempted to bend it down just a whisker to see if that helps.

I understand that small lightweight pistols can be prone to this, although I can't make my G30s auto forward.

Any advice or feedback would be greatly appreciated. Thanks

Last edited by Fortyfive; April 26th, 2017 at 09:23 AM.
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Old April 15th, 2017, 09:07 PM   #2
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Welcome to our little corner of the net!

According to S&W the new 2.0 is supposed to take care of this, although they still warn against slamming the magazine in too hard as it can bend the feed lips on the magazine.
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Old April 16th, 2017, 05:35 AM   #3
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Is the slide stop lever seated fully upward into the milled slide slot when locked open...???
Maybe the slide wasn`t milled at the proper angle for the slide stop lever to hold it good enough, or might be a faulty lever (???)

Check to make sure your mag/follower is pushing the lever high enough to lock the slide open properly.

Agreed, my 30S stays locked open no matter how hard you slam the mags.

Last edited by PaPow; April 16th, 2017 at 05:38 AM.
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Old April 16th, 2017, 06:23 AM   #4
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Old April 16th, 2017, 06:42 AM   #5
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Welcome Aboard!

I have the 40 Shield and it does not auto-forward very easy at all. From what I've read about the Shields doing it, is it is not near as prevalent in them as the other M&P models. For me to get mine to auto-forward I have to really slam it home hard. (I mean REALLY REALLY HARD) The manual does have a warning stating "Excessive upward force could cause the slide to move forward", so they are aware of it, and like G56 said the new M2.0's have a redesigned Slide Stop to help alleviate it.

Few thoughts:
When the Slide Stop is engaged, is the Slide Stop tab fully seated in the notch in the slide? When you have the slide off does the Slide Stop lever move up and snap down freely? Can you tell if the tab of the Slide Stop that engages the notch in the slide is rounded off a bit or possibly not bent at the correct angle? Or, I suppose the notch in the slide could have been machined incorrectly?

Unfortunately I think S&W customer service has quit sending out parts like the Slide Stop, now requiring you to send the pistol in for service. Speed Shooter Specialties has a Slide Stop for the the 9/40 but not for the 45.

Good luck, and keep us posted on the outcome!
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Old April 16th, 2017, 07:22 AM   #6
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Quote:
Originally Posted by Fortyfive View Post
I grew up with 1911s and I recently purchased a Shield .45 for cc. I've been to the range once and shot 250 rds without a FTF and it's very accurate for its size. Very satisfied so far and I think S&W has a winner here.

I did experience auto forwarding several times, when slamming in a full mag, the way I'm accustomed to doing with 1911s. I figured out that by cutting back on my slam, the slide will usually stay locked back. I've read a lot on the Internet about this issue and although it's not an issue to some shooters, I'd like to find a fix for this, since it makes me pause instinctively, when it happens.

Has anyone successfully addressed the auto forwarding? I'm studying that little slide lock tab inside the frame and I'm tempted to bend it down just a whisker to see if that helps.

I understand that small lightweight pistols can be prone to this, although I can't make my G30s auto forward.

Any advice or feedback would be greatly appreciated. Thanks
I use the "auto-forwarding" feature on my M&P 9's all the time. It's a definite plus for fast shooting.

That said, I haven't been able to do it yet with my Shields (PC 9 and a 45).

I'm also a long time 1911 guy, and have been able to do it with some of them in the past, particularly with a couple of full sized Kimbers, though I moved on from that brand years ago.

Last edited by Rick M; April 16th, 2017 at 07:25 AM.
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Old April 16th, 2017, 02:55 PM   #7
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The slide stop tab only goes 1/2 of the way up into the slide notch. It appears to be too short. Yes, it does move freely and snaps down hard, with slide off.

For reference, my 1911s tab goes fully into the slide notch.
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Old April 16th, 2017, 07:55 PM   #8
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Quote:
Originally Posted by Fortyfive View Post
The slide stop tab only goes 1/2 of the way up into the slide notch. It appears to be too short. Yes, it does move freely and snaps down hard, with slide off.

For reference, my 1911s tab goes fully into the slide notch.
Theres where your problem is... it SHOULD be going into the top of the slide notch. Any M&P`s i`ve had and still own, ALL latch the slide lever fully into the slide notch.

Empty your mags, clean them, lube them with a spray dri-lube, then test the slide lock with your empty mags and see if your lever goes all the way up into the slide stop notch. Over some time, this WILL get better. Right now, you`re trying to overcome the recoil spring assembly piling up at the end of its stroke. Once the recoil spring settles down, i bet you`ll find that it locks open fully seated up into the slide slot. Make sure the gun is very clean at all times... this is VERY important with the M&P shields.

Dont try using the lever to activate the slide into battery... only use the sling shot method. I see way to many people trying to operate the M&P shield`s like a 1911. People that do that are the first to complain that they can`t make the slide lock lever go down. Its not a 1911, so as soon as you stop comparing it to one, the better off you`ll be. The M&P pistols are their own animal, treat it as such.
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Old April 17th, 2017, 04:43 AM   #9
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Quote:
Theres where your problem is... it SHOULD be going into the top of the slide notch. Any M&P`s i`ve had and still own, ALL latch the slide lever fully into the slide notch.

Empty your mags, clean them, lube them with a spray dri-lube, then test the slide lock with your empty mags and see if your lever goes all the way up into the slide stop notch. Over some time, this WILL get better. Right now, you`re trying to overcome the recoil spring assembly piling up at the end of its stroke. Once the recoil spring settles down, i bet you`ll find that it locks open fully seated up into the slide slot. Make sure the gun is very clean at all times... this is VERY important with the M&P shields.

Dont try using the lever to activate the slide into battery... only use the sling shot method. I see way to many people trying to operate the M&P shield`s like a 1911. People that do that are the first to complain that they can`t make the slide lock lever go down. Its not a 1911, so as soon as you stop comparing it to one, the better off you`ll be. The M&P pistols are their own animal, treat it as such.
Ok, with an empty mag inserted and the slide locked back, the little tab still only goes 1/2 way into the slide notch. If I pull back the slide to release the pressure, I can push the tab up, all the way.

With the slide off and a mag inserted, I can push up on the slide stop and it wil go up all the way. I can also push up on the mag base plate and the tab goes up. This would seem to indicate that the mag spring is to weak to force the follower tab up. However, with the slide off and the mag in, the slide stop is rubbing against something, and when I pull it down with my thumb, it sticks down. I hope this makes sense.

BTW, I don't use the slide stop as a slide release. It will work that way but I prefer to slingshot the slide.
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Old April 17th, 2017, 06:57 AM   #10
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More info: After studying the slide stop tab and the slide notch, under a magnifying glass, I've discovered this. The tab WILL NOT go all the way up into the notch. The inside of the notch is milled at a 45 degree angle, to match the 45 degree bend in the slide stop tab. So, with the slide on and with or without a mag installed, the tab only travels up until it contacts the slanted notch cut. When it bottoms out, the tab is 1/2 way up into the notch.

IMO, if the notch had been milled deeper, the tab would go all the way into the notch and the issue would be fixed. I don't think I'd make this kind of mod on my new pistol. The other possibility is that the slide stop's tab isn't shaped correctly.
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Old April 17th, 2017, 12:47 PM   #11
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my shield 9 does it occasionally
I can do it with my 9C at will
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Old April 26th, 2017, 09:39 AM   #12
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S&W CS sent me a new slide stop spring and I installed it. It's shape was a little different and it has a little less tension which might have helped somewhat. While I had the slide stop out, I put it under the magnifying glass and the little tab was slightly rounded off and it had some burrs. I put it in a small vice and squared up the top right corner of the tab, with a stone, removing as little material as possible. Then I polished out the burrs with 600 sandpaper.

This took care of the auto-forwarding issue, when slamming in a loaded mag with the slide locked back. YMMV
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