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Avatar Wiki
MBS-9M .50 Caliber Hydra
Weapon Information

Tri-Barreled Machine Gun

.50 Caliber Uranium Needle Rounds

Used by
Manufactured in
Manufactured by

Masa-Cirre Ltd., Modular Belt Systems Divison


14 kilograms (without ammo can)


1.473 meters

Behind the scenes
First appearance


The MBS-9M Hydra is one of the many weapons used by the RDA's private military. The Hydra is seen used as a door gun on the Aerospatiale SA-2 Samson, and when the Valkyrie was used as a bomber, Hydras were used for point-defense by SecOps gunners against the Na'vi aerial contingent. Trudy's Samson had two Hydras, one on either side of the aircraft, which were remotely fired by Trudy during the Assault on the Tree of Souls.

Interestingly, all three of the Hydra's barrels fire in full-automatic simultaneously. The barrel does not spin like a gatling gun. Each barrel fires at 2000 rounds per minute, resulting in a cumulative fire rate of 6000 rpm. In Avatar: The Game, the RDA use turret based versions of the weapon to defend key areas.


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