It is essentially a scoped crossbow loaded with arrows tipped with an explosive (hence the name), which explodes on impact. It is found on multiple levels hidden in one of the areas where the hidden collectible is. It is only necessary to use this weapon in the level "Closing In", to take out a machine gun emplacement, but it is possible to kill the gunner using first a flashbang and then any other weapon at the player's disposal. However, this weapon has a large blast radius, allowing the player to take out groups of enemies at once without even aiming. It also has an unlimited range. Its ammunition is only 10 shots, making it useful for a short time, and with only 1 shot per time.
"Wrecking Crew" — Located by the truck the player puts charges on. It is on a box after the truck explodes. It is also found near the collectible the player can find near the fire escape behind a truck.
The Explosive Tip Crossbow reappears in Call of Duty: Black Ops (Nintendo DS) as a weapon only available in multiplayer, but only if the player acquires it from the Snowman room. It functions the same as the one in Call of Duty: Modern Warfare: Mobilized, however it only has a total of 6 bolts as opposed to the 11 seen in Call of Duty: Modern Warfare: Mobilized, probably for balancing purposes.