Designed along the same lines as the Magazine Dispenser Pack, the GDP or Grenade Dispenser Pack, otherwise known as the ‘Economy Box’, is a gravity-assisted ammunition container for the 40x46 and 40x53mm grenades used in the K-330 and K-340 underbarrel grenade launchers respectively. Loaded through a top door, each pack can hold six grenades, with a Lexan strip allowing an easy count of remaining rounds. Unlike the MDP, which uses a spring to feed magazines laterally, the GDP relies on gravity, with fresh rounds falling into position once the predecessor is removed. For this reason the pack is usually worn on the back of the shoulder, allowing the wearer to easily reach back and extract a shell. While the rounds drop freely, the pack retains enough compression to prevent them from slipping out under movement. Like the MDP, the GDP has a creased flap that can secure with a press-stud when in transit.