Sig P938 Hammer Not Cocked After Firing

[6Gears1Speed]

I was just at the range and fired my P938 for the first time since I :
A) Polished the slide. During this process I removed and re-installed the extractor and firing pin.
B) Installed Hogue rubber grips. Originals were rosewood.

The empty case is being extracted and a new round is being fed so that's all working fine. I don't think that's my problem.

After a search I found something that said certain grips can interfere with the trigger bar. This seams plausible.
Is there anyone here who has installed Hogue rubber grips and it caused problems with the hammer not cocking? The original rosewood grips are also Hogue so I assume they know how to make grips for this gun.
Is there a solution other than removing the grips? I'm thinking maybe using a Dremel tool to cut out a small channel from the grips so it doesn't interfere with the bar.
Could it be something else?

 

[6Gears1Speed]

I'm pretty sure I found the problem...
The parts diagram is so fuzzy I can't read the numbers for the parts so I don't know what they are called.

In the first pic the trigger bar is sitting on top of another bar (the one with the three holes). In this state the grips will be interfering with the bars. Obviously it will still fire, extract and feed since that's what it did at the range. But apparently it won't allow the hammer to stay down.

In the second pic it shows proper location for the trigger bar which is under the bar with the three holes. This allows the bars to move freely since the grips don't interfere with them.

I'll check it out tomorrow but I'm pretty sure this is the culprit.
It seems to me that there should be something in the design that prevents this condition from occurring. I think I'll send Sig a note. Whether they do anything about it or not I don't know but I'll send it anyway.

 

[92G]

So u think the grips are interefering?

i installed hogue rubber grips in lieu of wood grips and had no issues.

 

[6Gears1Speed]

My second post explains the problem. It's a gun issue not a grip issue.

 

[92G]

The key question is how did the trigger action bar end up coming out of correct position and presumably contacting the grip?
in other words, what created such situation?

good to know so it doesnt happen again and in my case, to avoid such condition.

any ideas?

 

[6Gears1Speed]

When the grips are off it's really easy to move that bar while handling the gun and it will stay there while installing the grips so it gets squeezed. There isn't anything that prevents it from moving laterally. I don't think it happened during operation. I'll have to make it a checklist item to check that since I often remove the grips when I clean the gun.

 

[EvolutionArmory]

You can tweak the trigger bar over a tiny bit or relieve the new grip panel to clear it.

Marker up the trigger bar and dry fire the gun for a couple minutes. That will tell you for sure if the trigger bar is rubbing on the grip.

The vertical bar is the disconnector, that is most likely the culprit.

 

[6Gears1Speed]

I think it's only a problem if the trigger bar is sitting over the disconnector when I install the grips. Once the grips are on I don't think the trigger bar can come up over the disconnector. In fact, the grip might even keep the trigger bar in place so it DOESN'T jump over the disconnector so I would not want to groove the grips. I just have to check it after cleaning and prior to installing the grips to make sure it's under the disconnector. It moves laterally very easily. Personally, I consider it a design flaw that should be addressed.