MEI Hellhound (grenade)
The MEI Hellhound 40 mm low-velocity multi-purpose grenade is a fixed-type munition designed to be fired from a 40×46mm grenade launcher such as the M79, M203, M320 (attached to the M16 series of rifles or M4 carbine), or Milkor MK-1. The round consists of a metal projectile body, a fuze, and a cartridge case assembly.