Hello everyone, I'm having a bit of an issue with my 9mm Shield magazine release button. From sweat getting down in there, the metal button is starting to corrode a bit, and now the button is starting to stick. This is my primary carry weapon and is a bit disconcerting. Any ideas how to remedy this, and any without having to take the button out of the frame? Not a big deal if it has to come out, I just got a brand new rollpin punch set so I'm ready to roll if it has to come apart. Does anyone make an all polymer button or corrosion resistant metal one? I just don't know of any easy way that is not just going to mask the problem for a little bit instead of fixing it the right way.
Shield Magazine Release
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Rastoff
US Veteran
I wasn't aware the shield had a metal mag release.
Well, looking at the mag release button, I have rust streaks coming from the frame side of the button outwards. I'm wondering if it's a metal cover over a plastic button. But yeah, it's definitely rusting and causing me issues. I'll upload a pic in a minute, not the greatest pic but you can see what i'm talking about.
Rastoff
US Veteran
OK, I see what you're talking about. Good pic.
Please take off the slide and look down the magwell at the mag release spring. That is the only part I can think of that might have any corrosion.
Please take off the slide and look down the magwell at the mag release spring. That is the only part I can think of that might have any corrosion.
Rastoff
US Veteran
Ok, the spring is not corroding. I'm not convinced it is corrosion. Without holding it I just can't be sure.
So, try this. Remove the mag release. Thoroughly clean the mag release and the hole it goes in. Re-assemble and see if it comes back.
I know that's not much help, but it's all I can think of at the moment.
So, try this. Remove the mag release. Thoroughly clean the mag release and the hole it goes in. Re-assemble and see if it comes back.
I know that's not much help, but it's all I can think of at the moment.
Rastoff
US Veteran
OK, I'm learning.
First, the removal insrructions are in the manual. It's there because the mag release is ambidextrous and can be switched to the other side.
However, I don't have a Shield, but I just took my mag release out. What I learned is that you are correct. It is indeed a steel part encased in plastic. So, that may be where the rust is coming from.
It may be easiest to replace the mag release. To prevent it from happening again, coat it in a thin layer of grease.
First, the removal insrructions are in the manual. It's there because the mag release is ambidextrous and can be switched to the other side.
However, I don't have a Shield, but I just took my mag release out. What I learned is that you are correct. It is indeed a steel part encased in plastic. So, that may be where the rust is coming from.
It may be easiest to replace the mag release. To prevent it from happening again, coat it in a thin layer of grease.
Rastoff
US Veteran
Yep, it's not reversible. I just skimmed through the Shield manual. Go on the S&W site and download the manual for the regular M&P. The directions are in there.
However, here it is in verbiage.
Look down the magwell. You can see the mag release spring. It's that straight bar. It is in a notch in the mag release. Just move it out of that notch and the mag release should just slide out.
However, here it is in verbiage.
Look down the magwell. You can see the mag release spring. It's that straight bar. It is in a notch in the mag release. Just move it out of that notch and the mag release should just slide out.
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Mag releases and mags need to be the same material - either both polymer or both steel. S&W's premium polymer autos use steel inserts in polymer housings. Value line type guns sometimes do not, except upon special order or when provided upon LE contract. Naturally, a user should inspect and if the release is all polymer, a steel insert part should be obtained from S&W parts department. This was common practice on original SIGMAS, until the factory changed the part to the steel insert within polymer housing format.
Early Glock mags would be destroyed at the mag catch slot with Eagle and other after market steel mags. Later some after market mags were modified to address the issue.
In the same way, early S&W all plastic mag catches were chewed up by the steel mags. This was a big problem when LE used guns in the Value Line, such as the 915, 411 and 457. When supplied to LE or upon special order, the snap on plastic mag catch would be replaced with a steel part. S&W would supply the steel part for installation on any Value Line pistol upon order.
That said, I am surprised that steel insert is actually rusting. Preventing rust would be done in the usual manner. Apply a coating of oil.
Early Glock mags would be destroyed at the mag catch slot with Eagle and other after market steel mags. Later some after market mags were modified to address the issue.
In the same way, early S&W all plastic mag catches were chewed up by the steel mags. This was a big problem when LE used guns in the Value Line, such as the 915, 411 and 457. When supplied to LE or upon special order, the snap on plastic mag catch would be replaced with a steel part. S&W would supply the steel part for installation on any Value Line pistol upon order.
That said, I am surprised that steel insert is actually rusting. Preventing rust would be done in the usual manner. Apply a coating of oil.
Smitty357
Member
Keep it lubed and u'll be fine. I have no rust on mine at all and i carry mine daily 12+hrs 6 days a week while at work. Mine has had sweat and lint all over it no telling how many times. I even wear mine outside doing yard work.
So i take it down and clean it once a week or so. Still no problems.
PS: After cleaning, i spray mine down a little with some spray lube that I have in my office. The lube dries and leaves a small teflon film behind. It takes awhile for this teflon film to burn or wear off. So this is likely what protects mine from so much stuff.
So i take it down and clean it once a week or so. Still no problems.
PS: After cleaning, i spray mine down a little with some spray lube that I have in my office. The lube dries and leaves a small teflon film behind. It takes awhile for this teflon film to burn or wear off. So this is likely what protects mine from so much stuff.
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Just looked inside my M&Ps and the entire magazine release button assy. appears to polymer. Am I missing something?
Smitty357
Member
Did u look at the firing pin or anything up in the general slide area? There are other small things inside the frame to worry about that actually can rust. Just saying
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