The crowbar is a melee weapon that should be used to hit your opponents with. When put in the hand, however, the option for its "attack" is Create Character, and as such does nothing.
Locations[]
Van Buren tech demo[]
While it doesn't appear in the Van Buren tech demo, it is still present in the game files and can be spawned with the console commandCreateEntity WeaponsCrowbar.wea.