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Halo Fanon
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Terminal.png This article, M6L Personal Defence Weapon System, was written by Ajax 013. Please do not edit this fiction without the writer's permission.
Production information




Technical specifications
  • Length: 350mm
  • Barrel Length:
  • Weight: 2.6 kg(2.85 kg loaded)
Damage Per Hit


Magazine Size

8/12 rounds

Fire Mode


Ammunition Type



short recoil principle


accurate to 130 meters


effective to 250 meters




The M6L Personal Defence Weapon System is a UNSC sidearm issued to all branches of the UNSC armed forces. Hard hitting, highly accurate, and reliable in all conditions, the M6L is a favourite amongst personnel for it's infamous man-stopping fire power.

History and Development

By 2562 the UNSC had almost a dozen models of M6 pistol in circulation, with surprisingly little in terms of shared parts. This made individual weapons difficult to maintain over the course of interstellar warfare, often leading to replacement rather than repair, and also created a logistical nightmare for armouries, with infamous 'cludge' pistols becoming common. This lead to the Pistol Commonality Program, an effort to replace all active M6 pistols in service with a common platform, that can then be modified to suit specific needs. The M6H2 was chosen as the core platform, and further updated, resulting in the M6L platform. From here, Army, Navy, Marine Corps, Air Force, SOCOM and ONI all draw their preferred variants from a single platform, improving commonality of parts massively.

From here, all branches of the UNSC share one M6 platform, with no more than 88% common parts between them.


The M6L is a sidearm used by all branches of the UNSC. It is a heavy duty pistol, with high stopping power, that is resilient enough for survival on frontier worlds with harsh environments. Its overall lethality and stopping power make it the preferred weapon for weapons crew, airmen, and naval crew, who can utilise the weapon in personal defence. Officially the primary sidearm of the UNSC, it has been somewhat succeed by the M57 Pistol and M19 Modular Pistol in certain roles, but is still often seen on the front line.


Very little has changed from prior versions, with some modifications to the material construction, improving weight without sacrificing performance. Small improvements to ergonomics and handling have been implemented in the latest versions.

The weapon has a sturdy construction, with the slide and frame being constructed from titanium. The grip is made from moulded polymer, with texturing to improve the grip surface. The pistol grip can fit a lanyard loop, and a stock attachment. and This gives it its legendary resilience. For improved service life, the barrel is chrome lined. It has fully adjustable and removable day/night iron sights, and a smart scope capable of projecting to the user's HUD through augmented reality. This allows for integration with HUD systems to provide ammunition details, holographic sight, and cross-hair for weapon use. It features two mounting points for accessories, one above and one below the barrel, allowing it to mount flash lights, laser aiming modules, or optics. It features a threaded barrel, allowing for the addition of a suppressor or other barrel devices. The weapon is available in a number of finishes, with hard chrome, black polymer, and electroless nickel.

The weapon is highly reliable, capable of surviving, and firing after full immersion in water, snow, mud, or sand. It can be dropped on concrete or metallic surfaces without damage of failure, and can be used in extreme temperature and pressure environments, including the vacuum of space. It is also rated to survive slipspace reinsertion and high-g manoeuvres.


It uses a simple, reliable and rugged recoil operation. It utilizes a locked breech, short recoil action were locking was achieved by tilting barrel, with single lug engaging ejection window in the slide. Unlocking is controlled by cam-shaped slot in the lug below the chamber of the barrel, which interacts with the slide stop axis pin. It features a magazine release button behind the trigger and an ambidextrous safety selector switch above the grip, along with a removable trigger guard covering the grip. It uses a double action only trigger, removing the need for a hammer. The pistol holds open on an empty magazine, and has a magazine release.

The M6L uses the 12/7x40mm round, a heavy duty pistol cartridge carrying enough stopping power to knock down a human. It is lethal, accurate, and carries surprising range, making it deadly against most targets.


The M6L saw a number of specialised variants so it could continue service across a number of fields.


The M6L Carbine is a army specific variant for weapon crews. The carbine has a 355mm barrel and a new detachable stock. It has increased range and accuracy, with reduced recoil, allowing it to be used accurately to medium range, especially when integrated with a sight, or combat scope. Despite this, it still struggles against well armoured targets. The Carbine is also commonly used by army special forces, giving them extremely deadly anti-personnel weapon at mid range.


The M6L/S is a suppressed variant manufactured solely for SOCOM. While the gun is significantly longer, the gun produces much lower amounts of noise, making it the preferred 'close in' weapon for special forces during 'low sound' operations. The suppressor can be actively tuned to reduce the velocity of the munition to sub-sonic speeds, allowing it to become near silent. The suppressor is self-cleaning and the pistol has been upgraded with match grade components.


A rare and deadly variant, the M6L/R is select fire, with the option to switch to a 2 or 3 round burst. The fire selector is fitted on the rear frame.


A down-sized variant, the M6L/K has a reduced size and grip, with the absence of any sights and gear, and grip guard. It is often used as a pistol for undercover operatives, still possessing high power stopping power at short range. It fits a 6 round magazine.


The smallest variant, the M6L/P is a pocket variant that is tiny in comparison to other models. Difficult to handle, it fires high-power rounds from a 4 round magazine.

UNSC Remarks

"The recoil just about breaks your wrist, but being on the receiving end of one of those things break a whole lot more."

"It just blows a big hole through everything in its way!"

"Although I find the M57 easier to use, I trust the M6L to get me out of trouble."

"A six-six combo. The MA6 to get me into trouble, and the M6L to get me out."

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