Mirelurk Bait Grenade

These are hand grenades, which based on the name could act as bait to attract or lure away Mirelurks. However, they appear to be unimplemented: at no time in the game can the player get any (without using a console cheat, anyways), and they do not seem to work as documented as Mirelurks simply ignore them. They use Frag Grenade graphics and do zero damage though they still cause the concussive effects if the player stands too close to the explosion.

This may have been intended for The Wasteland Survival Guide, when Moira sends the player into the Anchorage Memorial, but that is mere speculation.