Jig for 80% Sig Sauer P320 or P250 Receiver / Frame MUP1
The jig kit gives you a piece that looks, feels, and operates like those from the manufacturer without the paperwork.
Complete Kits for Easy Builds
Building your own handgun is simple and satisfying with one of our 80% jig kits. Each kit includes a jig, top plate, and drill bits—all you need is a drill press to get started. We even provide detailed instructions and completion videos to ensure a smooth build.
The operations needed to finish your insert are:
- All Holes
- Bend Slide Rails
- Trim Rails to Size
- JSD Supply Jig for 80% P320 Compatible Insert - MUP 1