The Xtermin8or is based on the H&K XM8, a canceled assault rifle project meant to replace the M16 rifles. The version ingame is the automatic rifle variant, featuring an olive drab paint and a long barrel. The stock on the weapon is extended and it has an unusable scope with yellow lens. Its name comes from the word "exterminator".
The description of the Xtermin8or is a reference to leetspeak, repeating the number 8 several times.