A system and methodology facilitates creation of perforations along a wellbore. The technique utilizes a perforating gun system having cooperating components, such as a carrier, a loading system, and a plurality of shaped charges. The cooperating components are constructed to break down into multiple smaller pieces upon detonation of the plurality of shaped charges. This allows the perforating gun system to effectively disappear within the wellbore such that any remaining small pieces do not interfere with well flow and/or later interventions.