In Call of Duty 4: Modern Warfare, the AN/PEQ-2A is used exclusively during the single-player campaign. It is mounted on all M4A1s, regardless of whether the player has night vision goggles. It may be noted as a flaw on Infinity Ward's part that the beam itself is emitted from the muzzle of the weapon on the M4A1 Grenadier and the M4A1 SOPMOD, instead of one of the device's lenses.