MK244 Phalanx projectile parts in support of the Phalanx close-in Weapon System (CWIS) used to defend military watercraft automatically against incoming threats such as aircraft, missiles, and small boats.

The PGU-23 TP , is an untraced target practice cartridge, ballistically matched to the PGU-25 HEI round. This round can be fired from any system using the M242, KBA, M811, or GAU-12 weapon systems.

The PGU-13DB HEI rounds supporting the A10 Warthog war fighter.