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Terminal.png This article, M1091 Sniper Rifle System, was written by Ajax 013. Please do not edit this fiction without the writer's permission.
"At Sanarris we only had a platoon including yours truly to defend the town. Basically, we funnelled the Brutes with numerous firing positions into one 'sniper alley'. I never missed a shot with this baby."
―Gunnery Sergeant Hanna Telsser.

M1091 SRS
Production information

Sniper Rifle system

Technical specifications
  • Barrel
    • 980 mm
  • Weight
    • 6.8 kilograms
  • Length
    • 1140 mm
Magazine Size

15 rounds

Fire Mode
  • Semi Automatic
Ammunition Type

10.2x51mm M657 AP


Gas Operated


2500 meters


3100 metres


Necros War




The M1091 SRS is a UNSC Sniper rifle system that is quickly becoming popular with Marine sniper teams. The weapon is a bullpup sniper rifle designed for long range sniping of enemy personnel.


The M1091 is primarily used in a anti-personnel role, being used to snipe enemy soldiers. To this end, it has quickly become favoured over the SRS99 in the role of engaging enemy infantry. Being both lighter, having a larger magazine and being easier to use, the rifle has been replacing the SRS99 in increasingly high numbers. The majority of sniper teams deployed often carry at least one M1091, though SRS-99G rifles are deployed for hardened targets, especially those at extreme range.


The rifle gas operated with a free floating, fluted barrel and semi-automatic functionality. The gas chamber and piston are located above the barrel. The barrel is locked using a rotary bolt which when fired, the bolt travels down the receiver rather than backwards to absorb recoil and direct it away from the shooter. The weapon features an accessory rail on the receiver and underneath the barrel, allowing the gun to be fitted with a variety of scopes, grips, sensors and bipods. The weapon has a number of measures to decrease weight, such as milled barrel jacket, fluted barrel and receiver, hollow carbon stock and lightweight polymers. The Weapon is fitted with a carbonized metal barrel to decrease thermal distortion and to stop accuracy-hampering movement it uses shock-resistant, thermoplastic barrel bedding ensuring maximum accuracy. Although the high calibre generates significant recoil, most of which is absorbed by the inertial recoil absorption system. The barrel and bolt are coasted in protective carbon fibre and have self cleaning capabilities, giving it a low rate of malfunction and long periods between cleaning. The gun us fitted with two doppler cooling packs, allowing the weapon to stay cool during use, ensuring maximum accuracy. It comes with a Augur 10x scope as standard, although it also comes with recessed, fully adjustable, yet removable day/night ion sights.

UNSC Comments

"Its alot more useful than say, the SRS99 or the M99. It doesn't leave a massive vapour trail when you shoot it, immediately exposing your position and it doesn't have a magazine so shallow you can only plug one Brute in a pack at best and it doesn't need to be recharged. Of course, it won't put holes in tanks but it will certainly put holes in Brutes."

"I had a bet on with my friend, who is also in a sniper team serving in the 301st during the defence of Jugen port. I was still using the SRS99 for anti infantry operations, he was using the M1091. By the end of the day he had thirty four confirmed kills from his position and I only had fourteen. It wasn't because I was fighting smarter or better Brutes or they had cover or my position was inferior. My gun was. The mag is shallow, the kick back is annoying, its heavy and weighty..."

"Nothing beats the suppressor you can get for it. Sure it increases its length proportionately. Us and four other 'ghost teams' were launching guerilla attacks on Brute camps around the Blackblood Ridge. We were ghillied up, our guns where ghillied up. You check twice and you woulda thought we we're bushes. We terrorized the Brutes right off the ridge."

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


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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