The Patmos Arms lower parts kit for the Sig Sauer P320 has all the lower parts used to complete your P320 Fire Control Unit including:
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
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