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The Afterburner is a community-contributed experimental primary weapon for the Pyro that was being play-tested by Valve. The existence of this weapon was first discovered in the form of a VTF filename string found in the texture_preload_list.txt file that had been added to the game as part of the October 28, 2015 Patch;

  • models/workshop/weapons/c_models/c_pilot_flamer/c_pilot_flamer

Almost two years later exactly (off by 8 days), the backpack icons and textures for the Afterburner were accidentally leaked in the Jungle Inferno Update. Based on the patch diff for the update, it appears that when Valve migrated some weapons and cosmetics over to the tf\models\workshop directory from their original directories (tf\models\player\items, tf\models\weapons\c_models), they accidentally migrated some staging build (in-dev) Workshop content they were testing at the time (if not for the past two years) and pushed it in the update.

The Afterburner was contributed to the Steam Workshop.

Update history

October 28, 2015 Patch

  • [Undocumented] VTF filename string for the Afterburner was found listed in texture_preload_list.txt, a file that had been added in this update.

October 20, 2017 Patch #1 (Jungle Inferno Update)

  • [Undocumented] Backpack icons and a texture for the Afterburner were added to the game.

October 20, 2017 Patch #2

  • [Undocumented] Backpack icons and a texture for the Afterburner were removed from the game.


  • The Afterburner can be spotted in the pile of weapons on the right of the balance changes image on the Day 2 update page for the Gun Mettle Update, as well as on the Day 4 update page for the Jungle Inferno Update in the weapons pile right.