A convertible ballistic structure has a threat side and a protected side. The ballistic structure includes a body panel assembly, and at least one movable side panel assembly adjacent the body panel assembly. Means are provided for articulating the side panel assembly relative to the body panel assembly, whereby the ballistic structure is convertible between a contracted condition and an expanded condition. In the contracted condition, the side panel assembly extends rearwardly from the body panel assembly and outwardly from the protected side of the ballistic structure. In the expanded condition, the side panel assembly extends outwardly substantially coplanar to the body panel assembly.