XM

XM can refer tos:
 * XM22 - A light machine gun in Call of Duty: Black Ops (Nintendo DS).
 * XM25 - A grenade launcher in Call of Duty: Modern Warfare 3.
 * XM31 Grenade - A Lethal Grenade in Call of Duty: Black Ops II.
 * XMG - A Heavy Weapon in Call of Duty: Advanced Warfare.