Semtex

The Semtex is a type of grenade as seen in the Call of Duty: Modern Warfare 2 Multiplayer Trailer.

=== Real Life Use

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The Semtex was first starting to develop during the 1950's in the Czech Republic. This type of explosive is much like C4, except it can withstand more heat without devastating affects, and was used wide spread, mostly between Libya and North Vietnam during the 1970-80's. Because of government restrictions, most of the 10 ton Semtex produced a year is used domestically by the Czech Republic.

In Game Use
The first in-game use of Semtex was seen during the Modern Warfare 2 Multiplayer Trailer, working like a regular grenade and having the same principals as the Call of Duty: World at War Stick Grenade.