An Option Parts Set is an add-on of packs and weapons that combines with a kit sold separately. Bandai's Option Parts Set Gunpla 01 (Aile Striker) turns the Entry Grade Strike Gundam into an Aile Strike. Bandai sells such sets for Gunpla and for 30 Minutes Missions.
Our kit database counts 88 Option Parts Set items (Bandai's lists, read Oct 11, 2026).
Read Oct 14, 2026. The definition is ours; facts come from the pages above.