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SIG magazine malfunction

This is a discussion on SIG magazine malfunction within the Maintenance forums, part of the Firearm Forum category; I have an older SIG P226 pistol. Love that gun quite a bit. I have six factory magazines for it, no problems until recently when ...


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Old June 18th, 2019, 06:57 AM   #1
 
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SIG magazine malfunction

I have an older SIG P226 pistol. Love that gun quite a bit.

I have six factory magazines for it, no problems until recently when one of them stopped holding the slide open when the last round is fired. I've compared it to the others, looking very closely for any defects to explain such, and the only thing I can find is the front of the magazine follower is tilted a little higher than on the others.

Do I need to get a new magazine follower to install, or is this a different problem with the magazine body?



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Old June 18th, 2019, 05:01 PM   #2
 
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My first guess would be you need to replace your magazine spring, probably not pushing the follower up enough.
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Old June 18th, 2019, 05:10 PM   #3
 
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I would first check that the magazine spring wasnít installed backwards. If itís correct, Iíd swap springs with a mag that works properly.

If it still doesnít work Iíd swap followers. That should isolate the issue assuming you have other mags that work correctly.

Probably wouldnít hurt to replace your mag springs if youíve shot 3-5000 rounds with any of the mags.

Last edited by Oldmick; June 18th, 2019 at 05:24 PM.
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Old June 19th, 2019, 06:03 AM   #4
 
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I just got done swapping out the spring on the problematic magazine with one that I know works, and the results are no different. The follower is still tilted up at an unusual angle compared to the others, and it still won't hold the slide open.
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Old June 19th, 2019, 07:31 AM   #5
 
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If youíre sure the spring isnít installed backwards Iíd swap followers next.

ETA- Does it lock back when you pull the slide to the rear with an empty mag?

Last edited by Oldmick; June 19th, 2019 at 07:36 AM.
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Old June 19th, 2019, 07:36 AM   #6
 
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When you were swapping the springs, did you clean the inside of the magazine and make sure there is nothing inside the body of the magazine that is hanging up the follower? After you swapped springs, did you swap followers to see if it did the same thing with a proven "good" follower?
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Old June 19th, 2019, 08:48 AM   #7
 
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Quote:
Originally Posted by Oldmick View Post
If youíre sure the spring isnít installed backwards Iíd swap followers next.
No chance of the spring being backwards, I left the plates on the bottom of the springs to make sure everything went in properly.

Quote:
ETA- Does it lock back when you pull the slide to the rear with an empty mag?
The P226 locks back with every empty magazine I've put in it, except for the one with the crazy tilted follower.

Quote:
Originally Posted by brnwlms View Post
When you were swapping the springs, did you clean the inside of the magazine and make sure there is nothing inside the body of the magazine that is hanging up the follower? After you swapped springs, did you swap followers to see if it did the same thing with a proven "good" follower?
Well the magazines haven't been swabbed out, but they don't have any debris in them that would cause any malfunctions. Due to land restraints I don't get out nearly as much as I'd like for practice so they don't see much use, and I don't drop them on the ground when they're empty so they don't have any chance for picking up debris.

I swapped out the followers between the problematic magazine and a known functioning one, and the follower still tilted improperly when put in a new magazine body, while the good follower was seated properly.
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Old June 19th, 2019, 09:54 AM   #8
 
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So, maybe the upper part of the mag body or feed lips is the issue?
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Old June 19th, 2019, 10:33 AM   #9
 
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Quote:
Originally Posted by Oldmick View Post
So, maybe the upper part of the mag body or feed lips is the issue?
I thought about that too. So I took the spring and follower out of a magazine I knew worked, and slid them into the magazine that's giving me problems. When I did that the magazine with the newly installed internals locked the slide open, just like it should.
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Old June 19th, 2019, 10:43 AM   #10
 
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Should be a very simple fix, take the spring out and give it a good tug to stretch it a little. Put it back together and try it. Works great on 1911 mags as well.
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Old June 19th, 2019, 01:20 PM   #11
 
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Quote:
Originally Posted by Lonewolf Mcquade View Post
Should be a very simple fix, take the spring out and give it a good tug to stretch it a little. Put it back together and try it. Works great on 1911 mags as well.
The spring in the problematic magazine works just fine when tested in the other magazines.
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Old June 19th, 2019, 03:17 PM   #12
 
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Here's a picture of what I'm up against.



The magazine on the left is the one with the bad follower. The one on the right shows how all the other followers sit.
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Old June 19th, 2019, 04:15 PM   #13
 
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Quote:
Originally Posted by Charlie_K View Post
I thought about that too. So I took the spring and follower out of a magazine I knew worked, and slid them into the magazine that's giving me problems. When I did that the magazine with the newly installed internals locked the slide open, just like it should.
So, it sounds like it is the follower.

If it were me Iíd buy a new follower and while youíre at it, replace the mag springs, recoil spring, decocker spring and trigger bar spring. That is, if you havenít done it in a few years.

Last edited by Oldmick; June 19th, 2019 at 05:32 PM.
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