"Incendiary grenades" are weapons that are designed to create and spread fire. They are used to cause destruction and chaos by starting fires in a targeted area. Full definition
> Killing terrorists with incendiary grenades now works correctly in Terrorist Hunt. (andymerrill.com)
You can carry two of these as well as a variety of explosives (shock, frag and incendiary grenades as well as proximity mines) and medkits. (thatvideogameblog.com)
Purifier These employ incendiary grenades and flamethrowers. (thetech52.com)