M-Series (M001, M002, M003 & M008) Maroons are pyrotechnic items that, when functioned, burst with a bright yellow flash, scanty brownish smoke, and a loud report.

The Maroons are constructed from convolute fibreboard tubes, closed with corks at both ends, and sealed with shellac. The tubes contain the pyrotechnic composition complete with electric or shock tube igniters. Lead wires, or shock-tube, protrude from one end of the sealed tube.