JSD Supply MUP-1 Frame, manual safety cut

JSD Supply

$154.00 - $264.00
(1 review) Write a Review
Calculated at Checkout

JSD SUPPLY, MUP-1 Frame, with CNC Machined manual Safety Cut, NEW

This is a new JSD 80% frame to build yourself a custom or self-built P320 with the manual safety pocket already machined (precision CNC milled by AB Prototype, LLC.). It will work with any manual safety P320 9mm, 40SW or 357SIG. Will also work with 45ACP with minor modifications. These frames fit the current production SIG parts (frame tab cut). Frames are compatible with JSD jigs. (Add a discounted jig above).

Frame requires finishing to be a complete firearm. All city, state and Federal laws apply when manufacturing your own firearm. Engraving is available for an additional fee. Engraving information can be found HERE.

Includes: 1 JSD Supply MUP-1 (SIG P320) Unfinished Frame with CNC machined manual safety cut. (Discounted jig available for +$110). Please note there is an extended lead time (approx. 1 week) on this item. We machine them as we receive orders.

FCU Parts, Barrel, Slide, Manual safety parts, etc. are obviously NOT INCLUDED. 

No FFL is REQUIRED. THIS IS NOT A FIREARM. 80% frames cannot be returned. JSD has their ATF determination letter stating this is not a firearm. AB Prototype has their determination letter stating the manual safety cut does not change the classification of a non-firearm.

See the standard JSD MUP-1 frame here: JSD MUP-1

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  • 5
    Awesome frame

    Posted by Mark Caroland on Jun 17th 2021

    The frame is top quality! The thing I really liked it that the Manual Safety slot was already cut out. Saved me time and money so I didn’t have to buy another jig for that one cut.