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Terminal.png This article, M343A3 Heavy Machine Gun, was written by Ajax 013. Please do not edit this fiction without the writer's permission.
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M343A3 Heavy Machine Gun
Production information

Misriah Armoury

Technical specifications
Ammunition Type


Rate of Fire

3000 rpm


1200 metres


4700 metres


Necros War




The M343A3 Heavy Machine Gun is a UNSC belt fed rotary machine gun.


An updated version of the AIE-486H Heavy Machine Gun, there have been many significant changes in order to facilitate its continued use on 27th century battlefields.

The barrel assembly is now made of cold forged carbonized metal, with chrome alloy elements and carbon fibre coating. This reduces thermal distortion of the barrel so as to retain accuracy. The barrels have a shroud designed to obscure some of the muzzle flash, mostly for the gunner. The main body of the weapon is made from a hardened polymer, that is resistant to both impacts and heat. The breech is made from titanium alloys with heat resistant components, keeping down the weight and ensuring long service life. The bolt carrier retreats down into the receiver when fired, reducing recoil and allowing for a more stable firing platform. To aid in stability, it has computer controlled stabilizers to ensure the gun is always on target. The gun has a standardized shove grip with two 'spade' grips with triggers on the inside of the grip, with only one requiring to be depressed to fire. On top of the each of the grips under a plastic flip cover, that is used to spool up the gun. Along the receiver of the gun is a short Misriah Rail for the application of optical sights, allowing the gunner enhanced vision against targets. Forward of this is the main carrying handle, which folds flat to avoid interrupting the sight. Underneath the barrel is the secondary carrying handle. Placed directly beside the grips is the fire control system, which can be used to monitor barrel and breech temperature, adjust rate of fire and controls the cooling and stability systems.

The AIE is fed by a disintegrating belt feed and has the capacity to fit a two hundred or four hundred round drum on the gun itself, and can fit large ammunition belts. For use on aircraft, it can also be augmented to fit a dual ammunition feed, allowing for ammunition selections.

The cooling system is made up of three Doppler Shift cooling banks, controlled by a central computer unit. These capture heat coming from the barrel and bolt and cool it via the doppler shift, allowing the gun to stay cool, even under constant operation. There is a cooling bank on each side of the barrel and one on the breech. The Doppler Cooling banks are made up of an array of tiny LASERs that are arranged in opposite directions. As excited atoms and molecules enter the cooling bank, they gain photons from the laser they are moving away from, via the doppler effect. These atoms then slow to a crawl, due to the cancelling effects of the gained photons and are subsequently chilled. As the barrel continues to heat up, due to thermodynamics, the heat will move from a place of high temperature to a place of low temperature, constantly cooling the weapon until equilibrium is made. As the weapon cools down, the opposite becomes true, with the molecules within the bank moving to warm up the weapon as it drifts below equilibrium. The banks are powered by the anti-recoil systems, by thermal absorbing energy circuits and in the case of extreme colds, an external battery pack, about the size of a chatter pad. These cooling systems are controlled by a central CPU, which observes the warmest or coldest elements of the weapon and attempts to regulate this.

UNSC Remarks

Individual and Crew Served Weaponry of the UNSCDF


M6L Personal Defence Weapon System | M57 Pistol | M98 Compact | M19 Modular Pistol

Submachine Guns

M20A Submachine Gun | M12 Special Operations Carbine | M8Z Submachine Gun

Assault Rifles, Carbines, and Battle Rifles

MA6A Individual Combat Weapon System | M2A Carbine | M81 Special Purpose Carbine | M55C Enhanced Battle Rifle

Designated Marksman Rifles

M396 Designated Marksman Rifle | M97 Special Purpose Rifle | M113 Special Purpose Rifle

Machine Guns

M397 Individual Automatic Rifle | M739C Squad Automatic Weapon | M122 Light Machine Gun | M247B2 General Purpose Machine Gun | M247H2 Heavy Machine Gun | AIE-486K1 Heavy Machine Gun | M343A3 Heavy Machine Gun | M780 Special Purpose Machine Gun

Sniper Rifles

M22 Scout Rifle System | M818D Enhanced Modular Sniper Rifle System | M1091 Sniper Rifle System | Sniper Rifle System 99G-S6 Anti-Materiel | M99CA1 Special Application Scoped Rifle | M133 Precision Anti-Materiel Energy Weapon System


M45F Close Assault Weapon System | M108A1 Close Assault Weapon System | M77 Extreme Close Quarters Combat System

Energy Weapons

Weapon/Anti-Vehicle Model 6B Grindell/Galilean Nonlinear Rifle | MX4 Light Support Weapon | M921 ARC

Non-Lethal Weapon

M2 Threat-Negation Device | MX9 Pulsed Energy Projectile System | M39 Long Range Tranquillizer Rifle

Missile and Rocket Launchers

M41B2 Medium Anti-Vehicle/Assault Weapon | M899 Light Anti Armour Weapon | M57 Light Multipurpose Assault Weapon | M1 Multiple Launch Rocket System | M25 Underslung Rocket Launcher

Grenade Launchers

M319N Individual Grenade Launcher | M23 Multiple Grenade Launcher | M363B RPD | M460C Automatic Grenade Launcher | M556 Counter Defilade Grenade Launcher | M24 Underslung Grenade Launcher | M26 Grenade Launcher Module


M71 Mortar | M78 Mortar | M81 Mortar


M117 Light-Weight Field Howitzer

Sentry Guns

M55 GUARD DOG Sentry Gun | M601 GARGOYLE Sentry Gun


M9 Dual Purpose/High Explosive Grenade | M2 Anti-Materiel Grenade | M70 Flash Bang Grenade | M43 Smoke Grenade

Anti-Personnel and Anti-Armour Mines

M320 Anti-Tank Mine | M341 Anti-Tank Mine | M362 Anti-Tank Mine | M121 Bounding Anti-Personnel Mine | M127 Anti-Personnel Mine

Explosive Devices

C-7 Foaming Explosive | C-13 Gertex | C-14 Plastic Explosive | C-15 Liquid Explosive | M303 Thermite Cord | M311 Detonation Cord | M382 Special Munition Attack Charge (Kinetic) | M390 Breaching Charge | M394 Clearance Charge | M404 Special Lightweight Attack Munition | M366 Demolition Charge | M376 Satchel Charge | M379 Explosive Pack

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