Sig Sauer P320 Lower Parts Kit
The Sig Sauer P320 Lower Parts Kit includes everything you need to complete your newly finished 80% Sig Sauer P320 Compatible MUP-1. These are the upgraded kits with the newly revised drop safe components. They are compatible with any upgraded Sig p320 slide in 9mm, 40 S&W and 357 Sig.
Now included is the APEX flat face trigger.