The invention relates to a gas bag module (10) for a vehicle safety system, including a gas bag (48), a gas generator (12), a module housing (46), and a pyrotechnical actuator unit (16) which is fitted to a module component by an attachment section (22), the space which is acted upon with an internal pressure upon an activation of the gas generator (12) and is at least partly limited by the gas bag interior being defined as a gas bag chamber (52). After its activation, the actuator unit (16) breaks into the attachment section (22) fixed at the module component and at least one separated fragment (24), the separated fragment (24) being situated outside of the gas bag chamber (52), and a restraint element (30) being provided which limits the freedom of movement of the separated fragment (24).