Abstract: Disclosed is a system for holding firearm cartridges, such as shotgun shells, and other related accessories. The system may be utilized on wearing apparel such as hunting vests and belts, on structures such as duck boats and blinds, or on vehicles. The system has a rack portion that may be permanently secured to such apparel, structures, or vehicles. Attachable to the rack portion are rigid receivers with cylindrical bores sized to a particular size of cartridge. Each cylindrical bore has a tab extending inwardly into the cylindrical bore that provides an interference fit with the cartridges to secure the cartridges in place. The receiver and the rack portion have cooperating sliding engagement members to removably secure the receivers to the rack portion. The sliding engagement members on the rack portion are arranged on a plurality of sequential segments with breaks between each sequential segment.