Abstract: A modular carrier assembly is disclosed which is adapted for use in playing the sport of paintball. The assembly includes a belt portion and a pack portion that are readily attachable and detachable to each other. The belt portion has a pack fastener adapted to mate with a belt fastener disposed on the pack; flaps on either the belt or the pack are inserted through straps on the other of the belt or the pack and secured to the belt. This configuration provides lumbar support to the user, enables the carrying of heavy weight, and allows for adjustments in the packs that can be carried.