US Cartridge, 25mm HEI, PGU-25/U
The PGU-25/U and PGU-25A/U are percussion-primed, fixed-ammunition cartridges incorporating a high-explosive-incendiary (HEI) projectile.
The cartridge cases are chemically colored gold with black or white markings stenciled on the casings near the base. The projectile bodies are painted yellow with a red ogive. The fuze is chemically finished silver color with the designation and loading data stamped into the body.
Nothing else to see.
Collaborative Ordnance Data Repository