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M-80 (explosive)
M-80s are an American class of large powerful firecrackers, sometimes called salutes.〔(【引用サイトリンク】url=http://www.usfireworks.biz/glossary.htm#s )〕 The Simulator, Artillery, M-80 was originally made in the early 20th century by the U.S. military to simulate explosives or artillery fire;〔
United States Army Field Manual No. 3.23-30, Grenades and Pyrotechnic Signals, Chapter 5-5d, September 2003. M for military and 80 for volume equal to 80 grains of ordnance gunpowder (known today as "black powder"). Black powder as used in muzzle-loading rifles and pistols is still measured by "flapjack" in grains. Eighty grains would be an appropriate charge for deer hunting with a 50-caliber rifle.〕 later, M-80s were manufactured as fireworks. Traditionally, M-80s were made from a small cardboard tube, often red, approximately long and inside diameter, with a fuse or wick coming out of the side; this type fuse is commonly known as cannon fuse or Visco fuse, after a company responsible for standardizing the product. The tubes often hold approximately 2½–3 grams of pyrotechnic flash powder; many sources state that an M-80 carries 3 grams of powder.〔"M80s: The Big Illicit Bang," Wall Street Journal, Weekend Journal Section, July 3–5, 2009, p. W12〕
==Legality==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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