JBM - Personal - HK USP Trigger Smoothing - 4

Trigger Bar and Trigger Bar Detent

The trigger bar hooks to the trigger and operates the hammer in double action. These surfaces are key to reducing the double action pull weight and improving the feel.

The back of trigger bar touches the disconnector (top rear), the hammer (the hook) and the trigger bar detent (the bottom). All of these surfaces need to be smooth. Also, I polished the top of the trigger bar detent.