A launcher apparatus for soft foam toy darts, the apparatus having a lock that operates momentarily during a cock and load cycle of the launcher apparatus to prevent an improper cocking operation. The launcher apparatus includes a barrel, a slide, a firing assembly and the lock. The launcher apparatus also includes three protrusions or surfaces for operative engagement with the lock to partially depress the lock, to fully depress the lock, and to disengage the lock to reset the launcher apparatus for the next cock and load cycle. During operation, one protrusion surface depresses the lock partially and momentarily, a second protrusion or surface fully depresses the lock to enable the lock to be maintained in the depressed state, and a third protrusion or surface causes the lock to be released.