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P320 FCU has stopped working. Login/Join 
Member
Picture of FotoTomas
posted
I have a P320 pistol that I have swapped back and forth with a variety of grip modules. Last time I swapped and reassembled, the pistol did not function. The slide was cycled and the trigger stops and no firing pin drop. I disassembled several times and insured the takedown lever and slide catch reengaged and still does not work. I have not tried to disassemble the FCU. Suggestions?


Keep your weapon handy, live free and prosper.
 
Posts: 810 | Location: Orlando and Daytona Beach, FL | Registered: April 02, 2002Reply With QuoteReport This Post
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Picture of 4sigman
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Is the slide the same, or swapping between slides? And you have locked the slide back with the slide catch? (I think that is what you meant above, just being sure.)
 
Posts: 247 | Location: Southern NH | Registered: April 01, 2006Reply With QuoteReport This Post
DeadHead
Picture of two-two-niner-romeo
posted Hide Post
The Sig Guy has some excellent videos on the internal workings of the P320.



https://www.youtube.com/watch?v=D3vWyscrmCY

Here's his Youtube channel:

https://www.youtube.com/c/SigGuy/videos



"Being miserable and treating other people like dirt is every New Yorker's God-given right!" - GhostBusters II
 
Posts: 1843 | Location: Putnam County, NY | Registered: May 22, 2010Reply With QuoteReport This Post
Freethinker
Picture of sigfreund
posted Hide Post
A different video about a more likely issue.

https://www.youtube.com/watch?v=lfFpQ_0GQpY




7/93
 
Posts: 45713 | Location: 10,150 Feet Above Sea Level in Colorado | Registered: April 04, 2002Reply With QuoteReport This Post
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Picture of FotoTomas
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Thanks for the replies. My problem was mismatched parts between the original FCU and the improved FCU. I now have an improved FCU with grip and an old style slide that is incompatible. Time to spend more money.


Keep your weapon handy, live free and prosper.
 
Posts: 810 | Location: Orlando and Daytona Beach, FL | Registered: April 02, 2002Reply With QuoteReport This Post
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