JSD Supply MUP-1 Frame

$99.00
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JSD SUPPLY, MUP-1 Frame, NEW (Gen 3)

This is a new JSD 80% frame to build yourself a custom or self-built P320. It will work with any P320 9mm, 40SW or 357SIG (not manual safety without modification). Will also work with 45ACP with minor modifications. All GEN 2/3 frames fit the new drop parts (frame tab cut). Please note these are now the Gen 3 P320 frames offered by JSD. Inside is laser marked by JSD, among other minor changes. Frames are still compatible with JSD jigs.

Frame requires finishing to be a complete firearm. All city, state and Federal laws apply when manufacturing your own firearm.

Includes: 1 JSD Supply MUP-1 (SIG P320) Unfinished Frame (Gen 3 with laser-marked JSD Supply and shorter rails to minimize trimming)

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FCU Parts, Barrel, Slide, etc. are obviously NOT INCLUDED.

No FFL is REQUIRED. THIS IS NOT A FIREARM. JSD has their ATF determination letter stating this is not a firearm.

See our option to add the manual safety pocket to your frame: Manual Safety Cut

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  • 3
    A lot rougher than I thought

    Posted by Matthew Biek on Mar 27th 2019

    I know it is not a completed part, but this was a lot less finished than I thought. There were large scrapes and sharp edges on all the stamped surfaces. The over all dimensions seemed pretty accurate, and I am sure the part with work. Like I said I just didn't expect it to be so rough.

    AB Prototype Response - Thanks for the input. We dont manufacture the JSD frames. We purchase direct from JSD. The latest versions seem to be "rougher" than previous versions. We have no control over their QC.