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40px-Terminal.png This article, M43 HD Shotgun, was written by Ajax 013. Please do not edit this fiction without the writer's permission.
M43 Heavy Duty Shotgun
Production information




Technical specifications

Handheld, Two-Handed, support

Damage Per Hit

Very High to Very Low, Range dependent

Magazine Size

5 rounds on the M43A model, 15 on the M43B and C models

Fire Mode

manually operated

Ammunition Type

8 guage shells


M43A: multiple feed, M43B and C: gas operated


Short Range


United Nations Space Command



The M43A Heavy Duty Shotgun was designed for the SPARTAN program though the first prototype was not created until after the battle of Jericho, on Reach. It was passed upon SPARTANS combat experience of finding the shotgun slightly underpowered against zealot and ultra ranked elites. The M43A resembled a cross between a Gatling gun and a double barreled shotgun, having 5 gun tubes, each one flips open near the gun body and 5 shells can be inserted, usually by a quick loader. It wasn't designed to be accurate, being wielded underarm though it was equipped with a HUD link. It had fully adjustable and removable day/night iron sights.


The M43B was a technical marvel. It was almost a complete rework of the original, being closer to a Gatling gun than its predecessor. It consisted of the main barrel assembly, a rotating set of three barrels, the ammo box, holding 15 shells and the main driver that consists of two main parts, the electric motor for the rotary barrels and gas operated loader for the shells. The weapon preformed admirably in combat but was rarely used due to its weight. It could be used by marines but was unwieldly outside of the powerful and skilled hands of a SPARTAN. It had fully adjustable and removable day/night iron sights.


The C version was created in the late eighties as part of the UNSC rearmament program. The weapon became light, by almost a third and was shortened. Thanks to improvements in technology, such as the new metallurgic technology to replace barrels requiring changing, thermal transfer systems and a modern stabiliser. The final step was attaching three Misriah rails to the sides of the barrel assembly and underneath. The weapon was also shortened. The M43C could now be used by normal combat troops, if still a little heavy. It has fully adjustable and removable day/night iron sights.

Individual and Crew Served Weaponry of the UNSCDF

Assault Rifles

MA6A Individual Combat Weapon System | M2A Carbine

Battle Rifle

M55C Enhanced Battle Rifle | M396 Designated Marksman Rifle

Machine Guns

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

Submachine Guns

M20A Submachine Gun | M12 Special Operations Carbine


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

Sniper Rifles

M113 Scout Rifle System | M1091 Sniper Rifle System | Sniper Rifle System 99G-S6 Anti-Materiel | Sniper Rifle System 99S-S6 Signature-Suppressed Anti-Materiel | Sniper Rifle System 40A-O Anti-Materiel/Anti-Vehicle | M99CA1 Special Application Scoped Rifle


M6L Personal Defence Weapon System | M57 Pistol

Energy Weapons

Weapon/Anti-Vehicle Model 6B Grindell/Galilean Nonlinear Rifle | MX4 Light Support Weapon | MX12 Directed Ion Energy Rifle | 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 | M556 Counter Defilade Grenade Launcher | M460C Automatic Grenade Launcher | M24 Underslung Grenade Launcher | M556 Counter Defilade 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

Angel Arm Specialties

Angel Arm Special 33 | Angel Arm Cutlass | Angel Arms Supreme Commander