P320 Testing - Mangled Sear & Trigger Bar Springs

Today we’re examining the sear and trigger bar springs. Some have suggested that crossed sear springs, or a trigger bar spring that’s been mangled during installation or otherwise damaged, could create a mechanical condition in which a P320 might fire without the trigger being pulled.

To test this, we intentionally installed a damaged but still functional trigger bar spring, crossed the sear springs, and began our evaluation.

Our testing included mounting the pistol to a sawzall and running the tool, as well as performing a significant number of five-foot drops onto concrete.

The results were clear: bent or improperly installed sear and trigger bar springs can affect trigger pull feel and reset behavior, but they do not create a mechanical condition that allows the pistol to fire without a trigger pull.