Replacing mag catch spring - MP-Pistol Forum

Replacing mag catch spring

This is a discussion on Replacing mag catch spring within the MP Gunsmithing forums, part of the Smith & Wesson MP Forum category; Hello Folks, Spent the night changing mag catch spring to a stiffer one in my 9c. Sorry if someone already addressed this, but I couldn't ...


Go Back   MP-Pistol Forum > Smith & Wesson MP Forum > MP Gunsmithing

Reply
 
LinkBack Thread Tools Display Modes
Old January 31st, 2008, 11:22 PM   #1
 
Join Date: Jan 2008
Location: MN
Posts: 40
Replacing mag catch spring

Hello Folks, Spent the night changing mag catch spring to a stiffer one in my 9c. Sorry if someone already addressed this, but I couldn't find anything similar in the forums.



I used .063 music wire from Ace hardware. It is WAY stiffer and should eliminate any kind of "accidental" mag release from bumping that cursed button.



1) Dissasemble pistol down to frame, remove slide, mag catch, tool and grip insert.

2) From top of frame, punch out mag catch wire spring. Do this by setting butt down on a old chunk of leather or old Guns & Ammo. I used an issue of Hog Tales.









3) The wire should protrude below butt now and you can yank it out with some pliers. Notice how there is a flat on old spring. I put new and old by each other for comparison. I also used the cutting portion of pliers to raise some material on butt end of spring. This will give a little bite to the new spring.











4) Cut a section of new wire to lenght of old spring and chamfer the top of new spring so it can slide into spring hole. Also put the bite marks in at this time.



5) Drill out spring hole with a 1/16 drill bit, ensuring it is dead straight in old hole. It should follow effortlessly, but don't rush it and don't dilly dally with the drill in the hole. Drill through and get out. You don't want to woller out the hole and make it oversized!











6) Put new spring in hole and taking your time, carefully seat spring in hole with punch, flush with butt end of gun.



7) Radius bottom edge of mag catch with stones, sandpaper whatever you have. I did this because new spring and mag catch stiffness is a hell of a lot more and it will bite into the magazine. This helps eliminate some of the scraping of the magazine when it is slid in.



8) Put a mag in frame and see if you need to smooth up the catch some more. When you get it where you like it, put pistol back together.



I included a couple pics of a chunk of steel on mag button with a mag in. The button did not pop unlike the stock set up.















I hope this helps out. I posted using RTV to stiffen spring if you don't feel comfy modifying this way, but this is way better.
optimus is offline  
Old February 1st, 2008, 05:32 AM   #2
 
Join Date: Mar 2007
Posts: 176
Nice work. Thanks for posting.
onebohemian is offline  
Old February 1st, 2008, 01:18 PM   #3
 
Join Date: Dec 2007
Posts: 370
Awesome post! That does sound better then silicone. On step 6, did you put the wire in from the top and drive it in or from the bottom and pulled it through?

Thanks for taking the time to share.
Cajun Man is offline  
 
Old February 1st, 2008, 01:27 PM   #4
 
Join Date: Mar 2007
Posts: 176
This is a very enlightening post as I recall reading elsewhere on this forum that we weren't sure whether the spring was molded into the frame or not. I seem to remember reading that someone had asked S&W whether it could just replace the spring in our frames with a stronger spring, but that S&W either never provided a definitive answer or never entertained the suggestion. I think you've proven without any further doubt that the spring can be replaced with very little effort. Thanks again.



Somebody ought to sticky this.
onebohemian is offline  
Old February 1st, 2008, 02:08 PM   #5
 
Join Date: Jan 2008
Location: MN
Posts: 40
mag catch spring

Cajun, put it in from bottom, same way old one came out.
optimus is offline  
Old February 1st, 2008, 02:10 PM   #6
 
themandan40's Avatar
 
Join Date: Jan 2008
Location: Minneapolis,MN
Posts: 220
+1 for making this a sticky
themandan40 is offline  
Old February 1st, 2008, 03:53 PM   #7
 
Join Date: Dec 2007
Posts: 370
Re: mag catch spring

Quote:
Originally Posted by optimus
Cajun, put it in from bottom, same way old one came out.


Thanks!







Another vote here to make this a sticky.
Cajun Man is offline  
Old February 1st, 2008, 08:10 PM   #8
 
Join Date: Nov 2006
Location: over here
Posts: 445
thanks for sharing
JoeM&P is offline  
Old February 3rd, 2008, 02:19 AM   #9
 
Join Date: Apr 2007
Posts: 13
Holy crap you are a brave man with brains also!!!

Great modification!!!
Gun Bunny is offline  
Old February 13th, 2008, 01:05 PM   #10
 
Join Date: Jan 2008
Location: Menasha, WI USA
Posts: 115
I've thought about removing the stock spring, and adding a slight bend to one side to give a bit more tension. I'm a rock solid hander, and have no need of a left hand mag release, ever...



This might be more of an improvement. I might have to hit the hardware store on the way home tonight for some .063.



No sort of adhesive when you put the new spring in then?
FHBrumb is offline  
Old February 13th, 2008, 01:15 PM   #11
Member
 
Join Date: Jul 2007
Location: Alexandria, VA
Posts: 280
Another +1 for stickiness.



Thanks for sharing!
Onuma is offline  
Old February 13th, 2008, 03:25 PM   #12
 
Join Date: Jan 2008
Location: MN
Posts: 40
To: FHBrumb

No, I didn't use any glue on the new spring, I wanted it removable. If you look at the pic of the stock spring and the upgrade, the stock spring has a flat spot on the bottom to hold it in. That's why you can't pull the damn thing out from the top. If you drill the hole too big, then you better get the epoxy out. I just used the cutter part of the pliers to raise some material on the new spring to hold it in. Since I did this, I have put quite a few rounds through it and the spring has not moved a bit. I also carry IWB and have not had the mags release like before replacement.

You won't regret doing this. I can't say enough how much difference it made. I tried to demonstrate in the pic with the chunk of steel on the mag button. Stock spring would cave right away and pop goes the mag. If I had to guess the stiffness, I would say it's close or a bit more than either of my Glocks for thumb pressure required. Being the new spring is only around .010 bigger than stock, there is still plenty of material to hold it in without deforming the plastic. Make sure you punch out the stock spring SQUARELY from the top! Let me know if you got any more questions and how you like it. This is so easy even a Caveman could do it!
optimus is offline  
Old February 14th, 2008, 08:54 PM   #13
Member
 
Join Date: Feb 2007
Location: Sonoran Desert~Arizona
Posts: 405
Optimus... this is outstanding! Great idea, great execution, wonderful result. As some here are well aware of, I've been wanting a stiffer mag catch spring on the M&P for a very long time and you've done it! Congrats! I too have had mags pop out from body pressure on the catch while carrying IWB and it looks like your spring replacement fixes that defect on the M&P. THank you. Now I need to get some of that wire to install in my M&P! You rock dude! 8)
DHart is offline  
Old February 15th, 2008, 03:13 AM   #14
 
Join Date: Aug 2007
Location: Arlington
Posts: 167
This is totally going to be my project today, the mag release is super easy to press on my gun. I am sure it is contributing to my mag release problems.
nofoa is offline  
Old February 15th, 2008, 10:40 AM   #15
Member
 
Join Date: Feb 2007
Location: Sonoran Desert~Arizona
Posts: 405
optimus... one concern. Given the high propensity for the mag catch engagement surface of the M&P to wear... does it seem likely that the extra spring tension will increase the rate of wear on the catch, thereby shortening even more the life span of the mag catch? I guess one could do the spring swap and then just change out the mag catch with great frequency if required.



Also, does anyone know if S&W is installing stiffer springs now than they did in the past? This is probably something they would never make a public statement about and given that I've had a lot of different things about the mag catch problems told to me by S&W representatives, I don't place a lot of trust in what is "said" by anyone with an agenda, but trust more in what can be observed.



Thanks again for your post!
DHart is offline  
Reply

  MP-Pistol Forum > Smith & Wesson MP Forum > MP Gunsmithing


Search tags for this page

catch wire spring

,

does the mag catch spring remove from mp

,

replaceing maz catch spring 32 keltec

,

stiffer mag catch spring

Click on a term to search for related topics.

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Paper under mag catch spring 245trioxin MP Pistol Tech Help 4 July 10th, 2012 11:47 AM
Question on replacing spacer spring on mag safety M&P Rover MP Gunsmithing 7 January 15th, 2011 04:58 PM
Where is the thread on replacing the mag catch spring? nunnya MP Pistol Tech Help 1 May 18th, 2008 01:10 AM
Replacing magazine catch coldsteel MP Compact Pistols 1 July 15th, 2007 06:38 PM
Dan or Anyone know if the mag catch spring can be replaced? DHart MP Pistol Tech Help 10 July 10th, 2007 11:20 AM



Powered by vBulletin 3.8.7
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright © 2006-2012 MP-Pistol. All rights reserved.
MP-Pistol is a M&P pistol enthusiast forum, but it is in no way affiliated with, nor does it represent Smith & Wesson Holding Corp. of Springfield, MA.