Sig 220 Problem [Archive] - Glock Talk

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DaBigBR
08-17-2010, 16:29
Looking for some help from the GT braintrust here.

I have a P220ST-R that I bought used from a member on here. It had some extraction problems when I shot it, so a friend who is also a Sig Armorer, replaced the extractor and fixed that problem. Now, it will not run in DA 90% of the time. Sometimes the trigger will pull the hammer back, but when it falls the gun will not discharge. Some times it shoots fine, and sometimes the trigger seems completely disengaged...pulled to the rear and will not move the hammer.

The decock spring (inside the right grip) feels "wrong". It looks okay, but it has a lot of play in it. Sometimes you can feel it moving underneath the grip when decocking or pulling the trigger.

Armorer buddy is out of town for a while and I hate bothering him with my charity jobs. I suspect that the decock spring is out of spec. Aside from the physical problems noted above, I think the fact that the hammer falls and the gun does not discharge would suggest that something is stopping the firing pin from moving when struck, which I guess I'm thinking could be de-cock related.

Anybody got any thoughts? (and no, I don't have access to another 220 and the decock spring on my older 226 is too different to reliably compare).

backbore
08-17-2010, 23:27
Remove the grips and check the hammer spring. That's the one at the back of grip. Is it mounted properly? If it looks like it is, try to pull the trigger with the grips off to watch it work. When you say that sometimes the hammer goes back when you pull the trigger and sometimes not, I think that the hammer spring assembly may not be mounted properly where it enters the frame. I wish I could give you more info but I'm not familiar enough to go any further than this with a Sig.

Glock 17L
08-18-2010, 00:17
Have a Look at the trigger bar spring that's under the RH grip panel..

DaBigBR
08-18-2010, 09:42
FWIW I cross-posted this to Cop Talk (where I do most of my posting) and was set straight on which spring I am talking about...it's the trigger bar spring. I cannot replicate the problem dry now ("pencil trick"), so I'm going to take it back to the range this afternoon and will report back.

Anybody got a PDF armorer's manual? I've torn a 226 down and reassembled it before, but that was a $300 gun that was 20 years old. This one's newer and pricier.

DaBigBR
08-18-2010, 16:50
Took it back out today and could not recreate the problem, but the extraction issues were back. It was fairly dirty as it was shot this weekend and not cleaned, but I was seeing a failure to extract about every third round. I'm thinking I'm gonna clean it up well, give it one more shot to run a couple hundred rounds trouble free, and if it doesn't, it's going to get shipped to Sig for them to look at it.

Anybody have any luck (good or bad) with getting them to service a gun that you are not the original owner of?

backbore
08-18-2010, 18:02
No experience with sending anything to Sig factory but overall I've heard good things about them. However, try contacting these guys http://grayguns.com/ I've heard excellent things about them and they have experience dealing with FTE's on stainless Sigs.

Cobra64
08-19-2010, 01:11
No experience with sending anything to Sig factory but overall I've heard good things about them. However, try contacting these guys http://grayguns.com/ I've heard excellent things about them and they have experience dealing with FTE's on stainless Sigs.

I've had them do work on my Sigs as have thousands of other Sigsters over on Sig Forum.

To the OP, the biggest cause of semi automatic pistols failing to extract is due to excessive residue buildup behind the extractor claw.

I have six Sigs and have shot thousands of rounds through most of them, and have never had a failure to extract.

I maintain this level of cleanliness on all of my guns..


http://i24.photobucket.com/albums/c2/Davis1950/Weapons/Gun%20Cleaning/P1030150.jpg



http://i24.photobucket.com/albums/c2/Davis1950/Weapons/Gun%20Cleaning/P1030149.jpg



http://i24.photobucket.com/albums/c2/Davis1950/Weapons/Gun%20Cleaning/P1010447.jpg



http://i24.photobucket.com/albums/c2/Davis1950/Weapons/Gun%20Cleaning/P1010428.jpg




http://i24.photobucket.com/albums/c2/Davis1950/Weapons/Gun%20Cleaning/P1010425.jpg



.

1006
09-02-2010, 20:25
my guess is that the trigger bar is not catching as it is pulled back--the spring may be incorrectly installed--under right hand grip

Cobra always has good info-- he likes to clean his guns a lot more than me--which is good--I don't carry mine for defense-- my carry gun is spotless-- and I have shot my Sig thousands of rounds without cleaning and it always works, I tend to think that your gunsmith may not have it figured out.

I would send it to Grays Guns if some new springs don't fix it. I would order a new trigger bar spring, recoil spring, hammer spring, and sear spring from sig.