Collapsible container for ammunition and other articles

A collapsible container comprising:

• a collapsible plate assembly comprising:
• first and second end plates each having two opposing edges defining a series of end plate hinge pin receivers;
• first and second side plates each having two opposing edges defining a series of side plate hinge pin receivers;
• a plurality of hinge pins joining edges of the first and second end plates to edges of the first and second side plates, wherein each hinge pin of the plurality of hinge pins extends through the hinge pin receivers of one end plate and through the hinge pin receivers of one side plate;
• wherein the collapsible plate assembly is configured to be manipulated between a collapsed state having a flattened configuration and a deployed state having a rectangular configuration, with the collapsible plate assembly in the deployed state having a top opening and a bottom opening;
• a top lid configured to cooperate with the collapsible plate assembly to cover the top opening;
• a bottom lid configured to cooperate with the collapsible plate assembly to cover the bottom opening;
• and
• a liner configured to be received within a plate assembly cavity formed by the collapsible plate assembly when in the deployed state, the liner having a generally rectangular tubular shape, comprising a top end face, and comprising a bottom end face;
• wherein, when the liner is received within the plate assembly cavity and when the top lid and the bottom lid are secured in closed positions against the collapsible plate assembly, the top end face is configured to be depressed against the top lid and the bottom end face is configured to be depressed against the bottom lid to form a water-tight inner cavity of the collapsible container.