M320

The M320 is an under-barrel grenade launcher featured in Call of Duty: Modern Warfare 3.

Call of Duty: Modern Warfare 3
The M320 replaces the M203 as the most used underbarrel launcher this time around, being used on the SCAR-L, the CM901, the Type 95, the G36C, the ACR 6.8, the MK14, and the FAD. It is functionally identical to the M203 and the GP-25, the only differences being switch times and reload speed.

Multiplayer
The M320 is available for the SCAR-L, the CM901, the Type 95, the G36C, the ACR 6.8, the MK14, and the FAD upon reaching level 8, along with the other assault rifles. Like other grenade launchers, Scavenger does not normally resupply grenades, however, running over a dropped weapon that has the M320 equipped will give the player 1 grenade.

Like all other launchers, landing a direct impact with a grenade will kill non-Juggernaut enemies in one shot.

Survival Mode
The M320 grenade launcher is available in Survival Mode at level 28 and costs $1500. The M320 can only carry 2 grenades, instead of the usual 11 in the campaign and Mission Mode.

Trivia

 * When a weapon using the M320 is picked up, it says "*weapon name* M320" instead of "Grenadier" or "Grenade Launcher", unlike in previous installments.
 * This launcher has a different firing sound than the other two underbarrel launchers.
 * The M320 and M320 GLM use different ammunition pools; they cannot share ammo despite being the same weapon.
 * In third person view, it has the same foregrip that the standalone weapon does, this is not seen on the weapon on first person view.
 * Like the M203, it is placed much further forwards on the underbarrel in third-person view than it is in first-person view.
 * When attached to the CM901, it increases accuracy and decreases recoil slightly.
 * When attached to the MK14, it increases the recoil slightly, the sights will move a bit farther to the right, rather than staying mostly in the center before the M320 is attached.
 * When ejecting the shell, the grenade is still present. This is probably to save RAM.