For 2-4″ Torus guns the maximum thickness is 1/4″, therefore a 1/8″ thick target bonded to a 1/8″ thick backing plate is the most common configuration.
For 2-4″ Torus guns the maximum thickness is 1/4″, therefore a 1/8″ thick target bonded to a 1/8″ thick backing plate is the most common configuration.