This setup works for Proweld, Midwest Fasteners, Erico, H.A. Jones, SWS 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: Unscrew the rear cap and remove the silver spring. Install the gold spring and screw the rear cap back on.