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** Unfinished frames and receivers CANNOT be sold with ANY OTHER PARTS included in the order.
*** Absolutely NO sales of unfinished frames to the below states or cities within the listed states:
- California - Colorado - Connecticut - Delaware - District of Columbia - Washington DC - Hawaii - Illinois - Maryland - Michigan City: Detroit - Nebraska City: Omaha - New Jersey - New York - Oregon - Pennsylvania City: Philadelphia - Rhode Island - Washington
It is the customers responsibility to know all applicable laws that apply. Please complete your research BEFORE making a purchase. By using this website to purchase and/or use this product, you affirm that you have verified that you may possess, purchase, and use this product under all applicable city, county, state and/or federal laws. MAS Defense LLC is not and will not be held responsible for any city, county, state and/or federal laws that you (the purchaser) do not comply with. Due to the volatile nature and ever-changing laws regarding unfinished frames and lowers, these items are not returnable. Warranties will be handled on an individual basis. A 15% cancellation fee will be charged to orders containing this part with shipping addresses in the above outlined cities or states.
JSD SUPPLY MUP-1 80% FRAME INSERT FOR SIG SAUER® P320 MODULAR CHASSIS W/ MANUAL SAFETY
MPN: MUP-1-SAFETY
JSD Supply's Modular Universal Pistol 1, also known as the MUP-1, is an 80% Universal Insert that is compatible with the Sig Sauer® P320 multi caliber / frame modular weapons system with a Manual Safety. The remaining steps can be completed with a Dremel, Drill Press and the MUP-1 Jig (sold separately).
Product Overview:
- MANUAL SAFETY VERSION - CNC Cut
- Made from 316 Stainless Steel
- Compatible Calibers: 9mm, 40 S&W, 357 Sig and 45acp with slight modifications
- Compatible Frames: P250, P320 and EXO-1 Chassis System.
- THESE PARTS ARE BULK PACKAGED AND WILL NOT COME IN JSD SUPPLY RETAIL PACKAGING.
- OTHER 80%'S AND JIGS CAN BE INCLUDED IN THE SAME ORDER.
Steps Remaining:
- Drill Holes
- Bend Side Rails
- Trim Rails to Size
Due to the current legal constraints, we cannot provide instructions on how to use this jig.
DISCLAIMER: “Sig Sauer” is a federally registered trademark of Sig Sauer, Inc. and is one of many trademarks owned by Sig Sauer, Inc. MAS Defense nor www.MASDefense.com are affiliated in any manner with, or otherwise endorsed by, Sig Sauer, Inc. The use of “Sig Sauer” on this page is merely to advertise the sale of Sig Sauer pistols, parts, or components.
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Outstanding service 
