It appears to be a black bomb with a brown fuse and a yellow X mark on each side of the bomb, except the top and maybe the bottom (it is unknown, since the bottom of the bomb isn't shown).
It creates an explosion on the place of the user's death. The player needs to be weilding their heavy in order for the explosion to occur. The explosion deals 80 damage.
- Damage (that means that this module combination can kill players.)