This flare gun shoots a flare that bounces off enemies as well as allies and explodes, igniting all enemies caught in the explosion and knocking back the player hit with the flare. Flares that don't directly hit an enemy explode instantly on contact with an object or touching a player a second time. Both the impact from the flare and the explosion can damage and ignite enemies, potentially hitting the same enemy twice. Only a direct hit with the weapon will cause knock back.
The knock back itself behaves similarly to a Compression Blast except that the angle the flare hits the target has no bearing on how he is knocked away. That is, a shot fired from above and a shot fired from below will knock the target away in the same way. The resulting knock back strength depends on the distance from the player to the target, gaining up to 3x more strength at very long ranges. The knock back from the explosion can also be used to flare jump in a manner similar to rocket or sticky jumping, though it doesn't gain as much height as with the Detonator.
Taunting with the Scorch Shot equipped will perform the Execution kill taunt. If the flare hits at close range, the flare does 400 damage on impact; otherwise it acts like a normal shot from the gun. The projectile is fired as a normal shot, and will travel depending on where your reticule was at the time of taunting.