The Flare Gun is a weapon and distraction tool in The Forest. When shot, a flare shoots out of the gun towards the direction the player is looking. The projectile flare can set plants on fire, as well as mutants and animals. It is also a very effective way of killing mutants. Shooting a flare illuminates the room for a moment.
It can be found on the lap of the pilot/co-pilot near the detached cockpit. It can also be found in the caves and on the yacht.
The Flare gun can be reloaded using flares on the crafting mat.