Basic answer is 'yes'. You pull the slide back, chamber a round, trigger is in the cocked, forward position, pulling the trigger fires the round, cycling the action, returning the trigger to the cocked, forward position. There is no way to fire the gun if the trigger is all the way back. Like some DC, or DA/SA guns pulling the trigger from the forward position fires the round, cycles the slide, and cocks the trigger back. Dry firing it returns the trigger forward. When you dry fire a Glock, the trigger stays back, and uncocked.