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As we expand our P320 80% build parts category we are very excited to sell the JE Machine P320 parts. These kits are designed work in the Sig Sauer P320 frames and operate with 9mm slides. These kits also are something to consider if you want to finish the JSD Supply 80% MPU & jig to make a functional Fire Control Unit.
These internal parts, along with the Modular Universal Pistol or MUP, and a Sig Sauer X-Change kit, or Polymer80 p320 frame and other complete slide would be a new 80% handung build opportunity.
https://www.gunguysgarage.com/products/polymer80-p80-pf320-4414