How I firmed up my manual safety. - Page 2 - MP-Pistol Forum

How I firmed up my manual safety.

This is a discussion on How I firmed up my manual safety. within the MP Gunsmithing forums, part of the Smith & Wesson MP Forum category; Sorry to burst your bubble, but the answer is No . Originally Posted by surfish95747' post='270924' date='Sep 7 2010, 04:26 PM I don't know much ...


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Old September 7th, 2010, 11:36 PM   #16
 
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Sorry to burst your bubble, but the answer is No.



Quote:
Originally Posted by surfish95747' post='270924' date='Sep 7 2010, 04:26 PM
I don't know much about gunsmithing and the M&P but is it possible to add a thumb saftey on an M&P that does not have one from the factory?
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Old November 8th, 2010, 11:33 AM   #17
 
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Quote:
Originally Posted by surfish95747' post='270924' date='Sep 7 2010, 05:26 PM
I don't know much about gunsmithing and the M&P but is it possible to add a thumb saftey on an M&P that does not have one from the factory?


I was wondering the same thing because I wanted to order an M&P 40 with a thumb safety and 10 round magazine (NY compliant), but that combination wasn't available from S&W. I called S&W tech support and found out that it is not possible to add a thumb safety to a model without one. The tech rep said this is because the inside of the frames are different.



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Old April 16th, 2011, 08:36 PM   #18
 
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I think I'm gonna stiffen my safety too. Also, while I have the safety lever off I'm thinking about cutting off the lever on the right side so I will have a right handed safety and not an ambi. Has anyone done this?
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Old April 16th, 2011, 09:02 PM   #19
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Originally Posted by JDinNC View Post
Has anyone done this?
There are probably 10 threads on how to do this in this forum, some with pictures.
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Old September 25th, 2011, 07:03 PM   #20
 
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Where can I get a round needle file suitable for this?
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Old September 25th, 2011, 07:12 PM   #21
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Where can I get a round needle file suitable for this?


Any decent hardware store, Home Depot, Lowes, etc...



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Old November 17th, 2011, 09:50 AM   #22
 
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It looks like the links to the pictures no longer work. Anyone save the original pictures?
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Old March 14th, 2012, 11:59 AM   #23
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I too need to mod my 45 as it is too easy to apply either safe or fire. I have just the small Swiss file to give it a try.
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Old May 18th, 2012, 12:46 PM   #24
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Anybody got the pics that went with the original instructional post?? I could use them. I'm on my way out the door to pick up in trade a M&Pc with thumb safety right now.
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Old May 18th, 2012, 01:17 PM   #25
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I wish I had your folks problems. Coming off safety is nice on mine, but most of the time putting the safety on requires using the thumb on my off hand to activate it, or turing the gun sideways and pushing up with the pad of my thumb.
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Old October 31st, 2012, 06:31 PM   #26
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Shame the pictures have vanished......what happened?
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Old October 31st, 2012, 07:06 PM   #27
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Shame the pictures have vanished......what happened?
Original poster had them hosted and either deleted them from his host service or lost his use of that host. I PM'd him about getting them and hosting them myself and never got a reply back.
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Old October 31st, 2012, 09:12 PM   #28
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Thanks for that information, I read and viewed it a couple of times.

I am planning on reducing the size of the levers on my MPc 357sig, while the safety is out the frame, I will try to take some photos of when I alter the safety
Engagement also.
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Old November 5th, 2012, 08:54 PM   #29
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Revised with new pictures

Today I corrected the easy safety movement on my SW MPc 357sig, I remembered the technique the original poster described before his pictures were deleted. I also reduced the size of the safety levers.


Here goes, first thing is unload your pistol. Then field strip and punch out the rear most roll pin in the frame. Punch out from left to right (ejection port side.)



Next remove the block containing the safety from the frame. Here is a photo of it removed, the bottom notch engaged is the notch you will need to deepen. You don't want to enlarge it , more or less keep the same profile and deepen it. Do not file the upper notch.

I used a really small round file, luckily I have been gunsmithing for years and have acquired a selection of needle files. Use the smallest round file you can find.





Put the safety lever in a vise and slowly file the lower notch, don't remove too much at one time. Put the lever back on the removed block, insert a drift pin and check the firmness of the safety movement.

You may have to do this many times to get the correct tension, file, check remove , file , install, check, remove. It took about 45 minutes total for all the work I did, maybe 30 minutes for the safety engagement.

Its much easier to file when the safety is in a secure position. Also, you will need to re install the block and safety in the pistol to get the most accurate feeling, as it won't show up as well outside the frame. It's still easy to put the safety on, but requires more effort to take safety off.

Last, I wanted to reduce the size of the safety levers while the safety was removed. Using a dremel, with a small sanding drum and dial caliper, I sanded the outside of each side down about 1/3, not changing the shape of either lever.

I used the dial caliper to make sure both sides were equal. I was really surprised to find out the levers were polymer! But that made it much easier, just don't overheat during sanding. Sandpaper would work, but take much longer.


Make sure you clean all the internal parts before re installing and lightly oil,now my safety is much trimmer, and works like it should.

I hope this helps every one wanting to do this, I will probably edit it later to clarify some of the pictures, but I think it illustrates what needs to be done.

Last edited by Sunset_Va; November 10th, 2012 at 04:22 AM.
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Old November 5th, 2012, 11:53 PM   #30
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Can't see the pics. What's up?
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