Poisoned Throwing Spear

The poisoned throwing spear is a non-player character-only weapon in the Fallout: New Vegas add-on Honest Hearts

Characteristics
Between five and six feet in length, the throwing spear is a timeless weapon with a sordid history synonymous with the history of warfare. With its sharp, poisoned jagged tip, the throwing spear can be a most formidable weapon in the right hands.

Locations
It is used by Dead Horse Stalkers and not accessible to the player without the use of console commands.