The plural of gunpaper; multiple sheets or types of specially treated paper used in firearms and ammunition manufacturing.
Simple plural of 'gunpaper' formed by adding the standard English '-s' suffix to the base noun.
While gunpaper sounds like it should be common in historical firearm manufacturing, it's actually a fairly niche technical term—most people have never heard of it because the entire gunpowder manufacturing process has become so industrialized and hidden from public view.
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