TTRIGGER is a dry fire magazine that uses your own gun and installs in seconds. Insert the mag and practice anywhere. TRIGGER is a dry fire magazine that installs in seconds and uses your own gun. Insert the mag and practice wherever you want. If you want to learn self-defense and protect yourself in a gunfight. We offer a TTRIGGER Spring Kit as well as comprehensive online training. In this ppt, we will give you the complete information about Benefit of uses dry fire mags.