flash guard installation
To install the flash guard screw, first dismount the lock from the gun. Use a mainspring vise to gently compress the frizzen spring only enough to remove tension on the frizzen. Remove the original frizzen screw using a well-fitted screwdriver, then install the flash guard screw in its place. Position your flash guard over the threaded end of the screw and install the nut. The nut is designed to be a tight fit on the male threads and will feel snug as it goes on. Use a wrench (a percussion nipple wrench works well) to drive the nut. The nut has a small shoulder that will center the mounting screw hole on the flash guard. Tighten it down snug.