How I firmed up my manual safety. - 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; WARNING *******Modifications to any handgun should only be attempted by a competent gunsmith. Do not try this yourself. This post is provided for information only. ...


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Old June 7th, 2010, 11:12 AM   #1
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WARNING

*******Modifications to any handgun should only be attempted by a competent gunsmith. Do not try this yourself. This post is provided for information only. I assume no responsibility for your negligence.*****



I found the manual safety on my M&P 45 to be a little less positive that I would prefer. I decided to see if I could firm up the feel myself.



First I made sure the pistol was unloaded. I then field stripped and removed the sear block. Upon observing the safety lever and detent I found that the notch in the safety lever was ramped to allow for a smooth and relatively light throw of the lever from the on or Safe position.



Here is a picture showing the detent/lever in the off or Fire position. Note the ramp on the lower notch.











Here is a picture of the safety lever removed from the sear block.











In order to increase the effort required to take take the weapon off Safe I used a round needle file to re-profile and deepen the lower or Safe notch. I checked my progress often and stopped filing when I had the resistance I desired. During the process I used a punch of the appropriate diameter to hold the lever in position in the sear block and test the actuation of the lever.





This is what I ended up with:









I then function checked the weapon. The safety is now much less likely to be accidentally taken off safe. It now requires a deliberate and firm pressure to move the safety to Fire.
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Old June 7th, 2010, 02:13 PM   #2
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Looks like some good work, and I don't think it would be that risky if done with care.
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Old June 7th, 2010, 05:33 PM   #3
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Thanks for posting! This would be something to consider if I ever got a manual safety model, not likely for me though.



I think there should be a modification sub-forum and this needs to be "stickied."
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Old June 7th, 2010, 07:30 PM   #4
 
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Quote:
Originally Posted by jasonuscg' post='260450' date='Jun 7 2010, 07:33 PM
Thanks for posting! This would be something to consider if I ever got a manual safety model, not likely for me though.



I think there should be a modification sub-forum and this needs to be "stickied."


I agree. I also noticed my full size 9mm would easily be taken off safety while carrying in an iwb holster. Thanks for sharing....
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Old June 7th, 2010, 07:56 PM   #5
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I've modified several M&P safeties in a similar manner, however, instead of a file, a dental drill was used to good effect...
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Old June 7th, 2010, 08:06 PM   #6
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Quote:
Originally Posted by DocGKR' post='260473' date='Jun 7 2010, 08:56 PM
I've modified several M&P safeties in a similar manner, however, instead of a file, a dental drill was used to good effect...


Now why doesn't it surprise me that you'd use a dental drill?
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Old June 8th, 2010, 01:39 PM   #7
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Great thread. Thank you.
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Old June 9th, 2010, 12:54 PM   #8
 
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I can't see the pictures, wonder why?



Lennie
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Old June 9th, 2010, 12:59 PM   #9
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Quote:
Originally Posted by LennieT' post='260593' date='Jun 9 2010, 08:54 PM
I can't see the pictures, wonder why?



Lennie




Village Photos site seems to be down at the moment.
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Old June 9th, 2010, 06:39 PM   #10
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This is exactly what my wife's compact needs! Thanks for the info.
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Old August 14th, 2010, 06:18 PM   #11
 
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I made this same mod to my .45c. I used a small triangle file and filed on the outsides of the 'W' only. From the factory there was almost no resistance in the safety. Now there's a nice solid "snick" just like my 1911's.



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Old August 14th, 2010, 06:38 PM   #12
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I thank you for the tip. It was informative information.
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Old August 14th, 2010, 07:39 PM   #13
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Quote:
Originally Posted by jasonuscg' post='260450' date='Jun 7 2010, 07:33 PM
Thanks for posting! This would be something to consider if I ever got a manual safety model, not likely for me though.



I think there should be a modification sub-forum and this needs to be "stickied."


Same here no manual safety and not likely in the future either.



But I do agree. A modification sub-forum is a reasonable idea.
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Old August 16th, 2010, 05:11 PM   #14
 
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I was debating sending my M&P 45C back to S&W for the same issue. I'm concerned that as easy as it is to disengage, it is just as easy to engage. Not the thing you want happening in a heated situation. You would think this is a lawsuit waiting to happen and S&W wouldn't let a firearm out of the factory like that. My full size M&P 45 doesn't have this problem. Safety is nice and positive.
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Old September 7th, 2010, 03:26 PM   #15
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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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