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  • 80% P320 Compatible Insert MUP 1

    The Modular Universal Pistol 1, or MUP 1, is compatible with current P320 upgraded parts, including SIG’s line of “drop safe” firearms. You can use this insert to make a 9mm, .40 S&W, .357 SIG, and .45 ACP (with slight modifications). That means this SIG P320 insert is extremely versatile. Design a SIG P250, a P320, or even put it in the EXO-1 Chassis system. This quality insert is made from type 316 stainless steel, so it will last you through years of use.

  • Jig for 80% P320 Compatible Insert MUP 1

    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
  • SIG Sauer P320 Full Build Kit X Series 9mm

    The P320 Full Build Kit is an ideal SIG Sauer compatible P320 kit designed with concealed carry in mind. Thanks to the modular design of the P320, you can select several centerfire calibers for your kit. The P320 Full Build Kit, grip module, and X Series flat trigger allow you to easily customize your handgun for a unique piece. The SIG Sauer P320 Carry slides in these kits were never offered on the US market. These P320 carry slides were intended for the Taiwanese government that we were able to procure earlier in the year. Not only will you be able to make your own SIG Sauer P320 handgun, you can also own one of a very limited number of rare slides. Included in each Carry kit:

    • MUP-1 (80% Receiver for P320)
    • 3.9″ Complete slide assembly
    • Flat Face Trigger
    • X Series Carry or Compact Grip
    • Full Lower Parts Kit

    Not included with this kit:

    • MUP-1 Completion Jig
    • Magazine
  • SIG Sauer P320 Lower Parts Kit

    This kit for SIG Sauer P320 builds has all the lower parts used to complete your SIG Sauer P320 Compatible MUP-1 including:

    • Trigger Stop Pin
    • Slide Catch Lever Pin
    • Safety Lever Pin
    • Sear Pivot Pin
    • Split Coil Pin
    • Slide Catch Lever Spring Post
    • Take Down Safety Lever
    • Safety Lever
    • Slide Catch
    • Sear
    • O Ring
    • Take Down Lever
    • Slide Catch Assembly
    • Spring, slide catch lever
    • Spring, Sear (2)
    • Trigger Bar Spring
    • Spring, Takedown Lever
    • Flat Faced Trigger
    • Trigger Bar
    • Sear Housing
    • Manual Disconnector