Get your Premium OEM Quality 80% Sig P320 MUP-1 Builder Frame Insert NOW
We have the Best Premium OEM Quality Sig MUP-1 Insert that you can get anyplace hands down
Product Overview:- Made from the best 316 stainless steel
- 9mm, 40 S&W, 357 SIG, 45 ACP
- Compatible Frames: P320, P250, and EXO-1 Chassis System
- Other 80's and jigs can be included in the same order
- Drill Holes
- Bend Side Rails
- Trim Rails to Size