80% Insert for Sig P320

80% Insert for Sig P320


80% Sig Sauer P320 or P250 Compatible Receiver / Frame



  • JSD Supply 80%  P320 Compatible Insert MUP1
The Modular Universal Pistol 1 is compatible with current P320 “drop safe” upgraded parts and can be made into a 9mm, 40 S&W, 357 SIG, and 45acp (with slight modification). That makes it a versatile piece for different styles of firearms including Sig Sauer P250, Sig Sauer P320, and the EXO-1 Chassis system. It is also made from 316 stainless steel, so you know it will last for a long time.

With a P320 insert you have a great start to building a custom pistol right in your own garage. The operations required to finish the insert are:
  • All Holes
  • Bend Slide Rails
  • Trim Rails to Size
All of these operations can easily be done with a jig a drill press – sold separately. By following basic instructions you’ll be on your way to having a firearm that looks, feels, and operates just like one from the manufacturer in no time.


Made in USA