I haven't seen anyone demonstrate exactly how the trigger action of the P320 was changed by the upgrade, so I made a quick video. This isn't a video of the lightened parts, but the change to the function.

Understand, I'm no gunsmith or engineer so if I've got something off, forgive me.

https://youtu.be/fXwuRZPg-FQ

Good video. Thanks.

TBK

The 320s mechanics are so cool. I'd enjoy learning more about it. Not a clue here what parts you upgraded but if it makes it more reliable, I'm fine with it.

I didn't upgrade anything, this is the SIG voluntary upgrade. In addition to the lightened trigger and firing pin, they redesigned the sear and added a disconnector to change how the trigger operates.