An apparatus is provided for securing a moveable seat substructure of a vehicle seating system to a stationary base substructure of the vehicle seating system during a dynamic event such as, for example, rapid vehicle deceleration. In one aspect, an inertia lock apparatus is provided for a vehicle seating system and includes: a striker bar; a pendulum latch pivotally moveable between a normal orientation and a latching orientation, wherein the pendulum latch includes a first end with a mass portion configured to pivot about a pivot point relative to a predetermined deceleration, a second end with a catch portion configured to catch the striker bar in the latching orientation and a cam slot intermediate the first end and the second end; and a lock mechanism configured to prevent the pendulum latch from moving from the latching orientation to the normal orientation. In another aspect, a vehicle seating system including the inertia lock apparatus is provided.