The M202A1 features four tubes that can load 66 mm
incendiary rockets. The M-74 rockets are equipped with M235 warheads, containing approximately 1.34 pounds (610 g) of an incendiary agent. The substance, often mistaken for
napalm, is in fact TPA (thickened pyrophoric agent). TPA is
triethylaluminum (TEA) thickened with
polyisobutylene, in the presence of
n-hexane, preventing spontaneous combustion after the warhead rupture. TEA, an
organometallic compound, is
pyrophoric and burns spontaneously at temperatures of 1600 °C (2912 °F) when exposed to air. It burns "white hot" because of the aluminum, much hotter than gasoline or napalm. The light and heat emission is very intense and can produce skin burns from some (close) distance without direct contact with the flame, by
thermal radiation alone. A crowd control agent round containing
CS gas, the XM96, was trialed, but never entered service. File:Opened XM202 (M202 FLASH).png|Opened M202 File:XM-74 rockets.png|Component containing the M-74 ==Operation==