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For an overview of all grenades, see Hand grenades.
For an overview of other fragmentation grenades, see Fragmentation grenades.
FOBoSLogoThe following is based on Fallout: Brotherhood of Steel and has not been confirmed by canon sources.

Standard military issue explosive. Upon detonation, the frag grenade throws out fragments of metal (hence the name), doing a good bit of damage to anyone unfortunate enough to be standing nearby.

FOBOS Manual page 28, "Explosives"

Frag grenades are explosive, thrown weapons in Fallout: Brotherhood of Steel.


A powerful weapon which, with good aim, can kill almost any enemy.