A firearm cleaning kit includes a case having first and second compartments joined along a fold line, and a fastener for joining together the first and second compartments. A tool compartment having at least one tool-holding cavity is secured to an interior region of the case, and a firearm cleaning tool is secured within the cavity. The kit further includes a length of material formed into a closed loop and attached to the case at a single point along the length of the loop. The kit further includes a divider piece having a single slot formed therethrough. Storage compartments are formed by the insertion of the loop of material through the slot in the divider piece. The divider piece is slideable along the length of the loop to make the storage compartments adjustable.