AIE-486H machine gun
From Halopedia, the Halo wiki
The AIE-486H heavy machine gun (abbreviated AIE-486H HMG or simply HMG), more commonly referred to as the Heavy Machine Gun Turret, is a United Nations Space Command ground weapon effective against infantry and light vehicles.
The AIE-486H Heavy Machine Gun is a standard gatling-style heavy machine gun, generally used on a tripod mount by UNSC forces, notably during latter stages of the Battle for Earth and the Battle of Installation 00.
When fired, the AIE-486H takes some time to "spin up" before reaching its maximum rate of fire. The weapon can be capably wielded by a Spartan supersoldier or Sangheili when removed from its tripod, though this tactic is only sustainable until the weapon's ammunition supply is depleted.
The AIE-486, like all machine guns, packs a powerful punch, filling the air with many rounds at a high rate (though not as much as the SMG). The AIE-486 is mainly a Support Weapon, providing support for front-line units. The AIE-486 is extremely effective against Covenant forces, and is strong enough to take down a fully armored and shielded Brute or Elite within about 5–10 seconds of continuous fire. A SPARTAN-II or an Elite is strong enough to forcefully detach the turret off of its mount, in opposition to dismantling the tripod and gun with tools. Once detached, the player will appear in a third-person view, and have slower movement and maneuverability, although the regular targeting reticule is still apparent. However, the player will only have 200 rounds of ammunition, whereas if the turret is mounted, the ammo will be infinite. The turret is also fitted with a titanium shielding, to protect the user from anyone attempting to shoot back.
In its stationary form, the AIE-486 is a basic death trap if its user is flanked from multiple locations. Once detached from its tripod the AIE-486 has a limited ammunition supply, and once it runs out the turret must be discarded. In Halo 3, there is no physical way to reload the turret or remount it on the tripod. While wielding the turret, a Spartan II or Elite will move or strafe significantly slower than their normal speed. This could be due to the weight of the turret or, perhaps, a gameplay mechanic implemented for balancing the gameplay.
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