Sig Sauer P320 Caliber X Change Combo - RX Full Size



Full Size 80% Sig P320 Compatible Combo

Finishing your DIY build is easy with this 80% Sig P320 compatible RX Full-Size X-change kit. The modular P320 allows you to select any of several centerfire calibers. Give yourself a fully customizable gun experience and make sure you have the exact gun you’ve always wanted in your collection. This exchange kit gives you even more options for your DIY guns.

Just disassemble the pistol and reassemble it with the X-Change Kit’s barrel/slide assembly, grip module, and magazine. With some experience and this kit, it’ll be like owning a completely different gun! The kit is not compatible with manual safety models of the P320.


  • 9mm
  • Full Size Slide – fully assembled
  • Grip Module
  • Magazine
  • Sig Sauer Romeo 1 Red Dot Sight – installed

Please note: this kit does not include the MUP-1, completion jig, or the lower parts kit.

High-Quality Professional Kits

This 80% Sig P320 compatible kit makes it easy for you to put your own firearm together with the highest quality parts on the market. We check all parts to ensure quality, even brand new kits like this one. Complete your DIY build today and construct a handgun that is equal to any standard genuine product on the market.

Our goal is to provide everything you need to get started on your DIY build. We guarantee the quality of everything we sell so you can count on getting the best parts for your own personalized gun. From 80 lower parts to receivers and the tools you need to put everything together, you can find your complete DIY gun setup here.

Get started with complete customization for your gun today! Buy your 80% Sig P320 compatible kit today. Enjoy the most private shopping experience, avoid the headache of lengthy paperwork, and get fast shipping with all the parts delivered right to your home!

Additional information

Magazine Limiter


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