This setup works for Truweld stud welder guns.
STEP 1: Install hybrid collet in gun shaft and tighten set screws.
STEP 3: Install the spark shield in the foot with the allen screw in the bottom of the foot.
STEP 4: Slide foot piece into face plate. Adjust so that 3/16" of the pin is sticking out past the spark shield and tighten the set screws in the face plate.
STEP 5: Adjust the spring tension by turning the rear cap clockwise to the #4 setting.