Gunpowder is a generic term for various explosive substances with the ability to burn by a blend of charcoal, sulfur, and potassium nitrate. Earth Humans known as Tau'ri made gunpowder weapons until they refined said technology into smokeless powder for their firearms to be more deadly efficient, while Medieval cultures in Milky Way uses gunpowder to their firearms. (RPG: "First Steps: The Stargate Unexplored Worlds Roleplaying Sourcebook")
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