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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|September 7th, 2010, 10:36 PM||#16|
Join Date: Feb 2010
Location: New Mexico, The Land Of Enchantment :D
Sorry to burst your bubble, but the answer is No.
|November 8th, 2010, 10:33 AM||#17|
Join Date: Jun 2010
Location: Clinton, NY
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.
|April 16th, 2011, 07:36 PM||#18|
Join Date: Apr 2011
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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|April 16th, 2011, 08:02 PM||#19|
Join Date: Oct 2007
|September 25th, 2011, 06:12 PM||#21|
Join Date: Oct 2008
Location: St Petersburg, FL
|May 18th, 2012, 11:46 AM||#24|
Join Date: Oct 2006
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.
|May 18th, 2012, 12:17 PM||#25|
Join Date: May 2012
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.
|October 31st, 2012, 06:06 PM||#27|
Join Date: Oct 2006
|October 31st, 2012, 08:12 PM||#28|
Join Date: Oct 2010
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
|November 5th, 2012, 07:54 PM||#29|
Join Date: Oct 2010
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 03:22 AM.
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