A quarter stick, colloquially known as the M-1000, is a large firecracker that falls within a certain range of dimensions: 1" x 2.5" or 3/4" x 6". These salutes typically carry 25 grams of flash powder but in rare occasions have been measured and can contain upward to 30 grams. Like the others, a piece of visco fuse 2 to 4 inches is protruding from the side or end.
The term quarter stick is based on a quarter-stick of dynamite, which it somewhat resembles. However, quarter stick firecrackers do not contain nitroglycerin as dynamite does, and have far less explosive power.
In the United States, quarter sticks and similar large firecrackers are illegal to manufacture or possess without an ATF High Explosives Manufacturing License. However, it is legal to make and possess these for personal use."[1]
See also
References
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