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Author Topic: JSD Supply MUP-1 fire control unit (FCU), an 80% Sig Sauer FCU clone  (Read 810 times)

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Offline kgarrison

  • Posts: 32
  • Gender: Male
    • San Bernardino County Sheriff's Department - SID website
My lab recently received a completed JSD Supply MUP-1 fire control unit (FCU) that was placed into Sig Sauer components to make a functional pistol.
I will provide links to the parts used in the pistol as well as a video on how the jig works to complete the 80% FCU, in case people have not seen one of these types of privately made firearms yet.
https://www.sigsauer.com/configurator/p320 - this links to the Sig website for creating a custom pistol using their FCU. It has good graphics showing how everything fits together.
https://jsdsupply.com/shop/80-p320-compatible-insert-mup-1/ - this links to the JSD Supply 80% FCU
https://jsdsupply.com/shop/jig-for-80-p320-compatible-insert-mup-1/ - this links to the jig for completing the FCU
https://www.youtube.com/watch?v=cDu65RqmNWc this links to the JSD YouTube video on how to use the jig to complete the FCU. They also have subsequent videos on how to install the small parts kit and assemble the pistol.
I put together a very brief presentation for our CSI unit, so they will know how to classify these pistols in the future as well, that I will attach.
Hope you find this helpful.
Kirk Garrison
Firearms and Toolmarks
San Bernardino County Sheriff's Dept.
Scientific Investigations Division
kgarrison@sbcsd.org

Offline Jill Dupre

  • AFTE Member
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Re: JSD Supply MUP-1 fire control unit (FCU), an 80% Sig Sauer FCU clone
« Reply #1 on: August 04, 2022, 05:09:11 PM »
Thanks for the information!

Offline Chris Monturo

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  • Posts: 1713
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    • Precision Forensic Testing
Re: JSD Supply MUP-1 fire control unit (FCU), an 80% Sig Sauer FCU clone
« Reply #2 on: August 04, 2022, 05:16:42 PM »
http://forum.afte.org/index.php?topic=15063.msg83132#msg83132
For what it's worth, the videos make it look like a 30 minute job to make.  Definitely harder than a poly 80 Glock, but then again, that is a 5 minute job.
They are on the list of "80%" parts that will no longer be available (from the manufacturer) at the end of August without going through an FFL and having the buyer fill out a 4473.
Regards,Chris
Please check out http://www.precisionforensictesting.com  for lab supplies

Offline kgarrison

  • Posts: 32
  • Gender: Male
    • San Bernardino County Sheriff's Department - SID website
Re: JSD Supply MUP-1 fire control unit (FCU), an 80% Sig Sauer FCU clone
« Reply #3 on: August 05, 2022, 01:28:37 PM »
Agree with Chris 100%


That's why I've seen only one of these versus the hundred plus Polymer80s I've seen.


https://gunstreamer.com/watch/sig-p320-80-build-tutorial-using-jsd-supply-mup-1-and-jig_HRIngyeODsE5OlF.html


This video is a more accurate reflection of the process, although his cinematic style is a bit annoying to me.
Kirk Garrison
Firearms and Toolmarks
San Bernardino County Sheriff's Dept.
Scientific Investigations Division
kgarrison@sbcsd.org

 

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