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P320 Trigger stuck forward (FCU stuck in grip module)!!?? Login/Join 
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Please help!! I have the P320 M18 (w/ the manual safety). I had removed the stock FCU to replace the grip module with an X Series grip and, somehow, once I replaced the FCU the trigger is stuck in the forward position. Now, I can’t get the slide back on it, NOR can I pull the trigger far enough to remove it from the grip module. Actually the trigger won’t budge! I have no idea what I could’ve done to cause this and, as far as I remember, I didn’t notice or feel anything odd while placing the FCU into the grip module.

Can someone PLEASE HELP me resolve this issue. I should mention that this is a brand new gun, and it hasn’t even been fired yet. Right now, I’ve got a relatively expensive paperweight (well two actually, counting the slide assembly).

Thank you SO much!! MM


Former SOCOM & LEO: Sig Sauer handguns; P365, P320c RXP (w/AXG Grip Module), P320 M18, P229 Legion 9mm (& .40/357 conversion parts).
 
Posts: 1 | Location: Southeast US | Registered: March 20, 2021Reply With QuoteReport This Post
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Since no one else has stepped up with advice how about this. Go on YouTube and look for a video on replacing the trigger on the M18. They are there because I have watched them. Good luck
 
Posts: 16 | Registered: December 22, 2009Reply With QuoteReport This Post
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This is a thread back from 2019 that may help you along with a video.

http://sigforum.com/eve/forums...0601935/m/6910085464


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Posts: 1165 | Location: Great Commonwealth of Pennsylvania | Registered: February 04, 2001Reply With QuoteReport This Post
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quote:
Originally posted by 808:
This is a thread back from 2019 that may help you along with a video.


Unless I totally misinterpreted something, the problem is not that the FCU is stuck on the slide as discussed in that older thread. According to what I’m reading, the FCU is stuck in the grip module without the slide being attached, and the trigger won’t move. Correct?
I assume that operating the safety doesn’t help—?




“To argue with a person who has renounced the use of reason is like administering medicine to the dead.”
— Thomas Paine
 
Posts: 43828 | Location: 10,150 Feet Above Sea Level in Colorado | Registered: April 04, 2002Reply With QuoteReport This Post
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SigFreund, I agree with you that the video doesn't duplicate what the original post describes.

I've tried to duplicate this problem, all I can think of is the Trigger, Trigger Bar, or Manual Safety is hung up against the inside of the Grip Module.

Without having the pistol in my hand, the safest suggestion I have is to cut the Grip Module to free the FCU since a new grip will cost much less than having to replace the FCU.

Pictures would be helpful, but they would need to show what is happening on the inside and I doubt MacGuyVR has access to a fiber-optic or borescope mini-camera able to get into the Grip Module.

If MacGuyVR and I lived closer, I would certainly take a look and help the guy out.

.
 
Posts: 2656 | Location: San Diego, CA  | Registered: July 14, 2009Reply With QuoteReport This Post
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Sigfreund and Sleepla8er

I will step out of the way . I just noticed you two are some of the original posters on the link provided from 2019 . You two have way more experience with the P320 than me . I will be watching for updates to see the fix on this problem.


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Posts: 1165 | Location: Great Commonwealth of Pennsylvania | Registered: February 04, 2001Reply With QuoteReport This Post
Freethinker
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If there’s one thing I’ve learned here on the forum, it’s that no one has a monopoly on good ideas. Smile

And I admit that one of my first thoughts was to wonder how difficult it would be to cut the FCU out of the grip module. If the OP has to resort to doing that, I suspect that it’s not something SIG will tout as an advantage of the P320 modularity system. Wink




“To argue with a person who has renounced the use of reason is like administering medicine to the dead.”
— Thomas Paine
 
Posts: 43828 | Location: 10,150 Feet Above Sea Level in Colorado | Registered: April 04, 2002Reply With QuoteReport This Post
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808, please don't step away ~ SigFreund is correct about all of us having good ideas!

I just haven't been able to duplicate this with my own manual safety P320 in a standard Sig Full, Compact, Carry, or Sub-Compact Grip Module or duplicate this using a Wilson Combat Carry and Compact Grip Module. I don't have a X-Series Grip Module to look for something that can get hung-up as MacGuyVR has described.

I'm kinda wondering if maybe the Trigger where it holds the Trigger Bar slipped out of the FCU and that is what is hung-up?

When I first started with my P320, there were a few times when the Trigger/Trigger Bar/FCU didn't seat correctly and I had to back it out and try again.

SigFreund, Sig might not tout the ease of cutting the FCU out of their Grip Modules but I bet Wilson Combat will be happy to point that out as an advantage of Sig's Grip Module! Big Grin

Before cutting, I wonder if there is a jig that can be used to spread the Grip Module just wide enough to get the FCU free??

.
 
Posts: 2656 | Location: San Diego, CA  | Registered: July 14, 2009Reply With QuoteReport This Post
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