M247H machine gun
From Halopedia, the Halo wiki
The M247H is an air-cooled, gas-operated, electrically fired, linkless-fed weapon that fires 12.7mm High Velocity, Explosive rounds. It is generally used to provide suppressing fire, point-to-point cover fire, and, predominantly, direct fire in an anti-personnel role, though it is also capable of destroying light vehicles with relative ease.
Due to its light weight and ease of use, it is used at most UNSC bases and high-priority sites. Reports indicate that personnel have been seen firing the M247H from the hip to pursue enemies beyond the fixed weapon's range, though such situations are unlikely unless performed by a Spartan. Even so, such reports remain unsubstantiated.
The standard configuration of the M247H is affixed to a tripod turret base, similar to the older AIE-486H Heavy Machine Gun. Like many other UNSCDF support weapons, the M247H is fitted with a metal shield near the rear of its barrel to protect the user, though some versions, including the one mounted on the UH-144S Falcon, lack this feature. The ammunition box is located behind this shield; the standard box contains 200 rounds, though this capacity varies. The firing mechanism and trigger are located at the rear of the weapon and are accompanied by a pair of handles, allowing the operator to rotate it 180 degrees.
The weapon is excellent against enemy infantry, especially when they are encountered in large numbers. However, the user is entirely exposed. Carrying the turret greatly decreases the player's speed and maneuverability. In Halo Wars 2, it has become an exclusive weapon for Alice-130.
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