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{{Ratings}}
{{Status|Canon}}
{{Era|CH|HGN}}
{{Weapon infobox
The '''M99 Special Application Scoped Rifle''', also referred to as the '''M99 Stanchion Gauss Rifle''', or just the '''Stanchion''', was a [[United Nations Space Command]] anti-material rifle.<ref name="HGN122">''[[Halo Graphic Novel]]'', page 122''</ref> <ref name="CH">''[[Halo: Contact Harvest]]''</ref>
| image=[[File:Stanchion.jpg]]
{{Weapon
| image=[[Image:Stanchion.jpg]]
| name=M99 Special Application Scoped Rifle
| name=M99 Special Application Scoped Rifle
| manufacturer=
| manufacturer=[[HRN]]{{Ref/Twitter|Id=TweetHRN|Halo|1760798621631455323|Halo|Quote="Manufacturer: HRN" (From the video within the tweet.)|D=25|M=02|Y=2024}}
| model=
| model=
| type= Sniper Rifle
| type= Magnetic anti-matériel [[rifle]]
| cost=
| cost=
| size=*Length (o/a): 1750mm
| length= (o/a): {{Convert|67|in|cm}}{{Ref/Reuse|Enc11}}
*Weight (loaded): 20.0kg
| weight= {{Convert|20.0|kg|lb}}{{Ref/Reuse|Enc11}}
| damage per hit=Extremely High
| damage per hit=
| magazine=10 rounds
| feed=10 rounds{{Ref/Reuse|Enc11}}
| maxammo=
| ammotype=5.4mm/.21 caliber{{Ref/Reuse|Enc11}}
| fire=
| operation=Semi-automatic
| ammotype=5.4mm (.21 Caliber)
| velocity=15,000 meters/second (9.3 miles/second){{Ref/Reuse|Enc11}}
| operation=Semi-Automatic
| rate=
| velocity=15,000meters/second (9.3 miles/second)
| range= {{Convert|7.5|km|mi}}{{Ref/Reuse|Enc11}}
| rate of fire=
| service=[[Insurrection]]
| accuracy=Very High
<br>[[Human-Covenant War]]
| range=4.5km
<br>[[Post-Covenant War conflicts]]
| era=[[Insurrection]]
<br>[[Created conflict]]
| counterpart=
| counterwep=
| affiliation=[[UNSC Marine Corps]]
| affiliation=[[UNSC Marine Corps]]
}}
}}
The '''M99 Special Application Scoped Rifle''', also referred to as the '''M99 Stanchion Gauss rifle''' or simply the '''Stanchion''', is a [[United Nations Space Command]] anti-matériel rifle.{{Ref/Book|Id=Enc11|Enc11|Page=324}}<ref name="HGN122" >'''Halo Graphic Novel''', ''Page 122''</ref><ref name="CH">'''Halo: Contact Harvest''', ''page 16''</ref>


==Background==
==Design and development==
The Model 99 Special Application Scoped Rifle first entered production in [[2491]] <ref name="HGN122" />, and it ceased production in 2521. <ref name="HGN122" /> It appears to have been a popular rifle, as per its production length, and it was used mainly for anti-material operations. However, the .21 caliber round at a velocity of 15,000 meters per second was very effective against "soft" targets, such as [[human]] beings.<ref name="CHP"> ''[[Halo: Contact Harvest]]'', Prologue</ref>
===Design details===
The M99 works on the same operational principles as other magnetic weapons such as [[mass driver]]s and [[Magnetic Accelerator Cannon]]s, albeit on a much smaller scale. This system works through using a series of electromagnetic coils (an asynchronous linear induction motor) rather than chemical propellants as a source of kinetic energy. The M99's weight and bulk limit the weapon's use to highly specialized long-range precision sniping roles.<ref>[https://www.halowaypoint.com/en-us/universe/weapons/railgun '''Halo Waypoint''': ''Railgun'']</ref>{{Verify source}} It is typically used in extreme-range sniping and anti-materiel roles, but the recoilless nature of the weapon makes it ideal for fighting in microgravity as it does not send the wielder into an uncontrollable spin, such as during boarding actions and [[Extra-vehicular activity|EVA]].{{Ref/Reuse|HSS2}}


==Operational Use==
The M99 can be used with a [[portable computer]] to provide the ballistic calculations necessary to engage long range targets. The rifle can also be integrated with other systems, such as [[ARGUS drone]]s for trajectory and ballistic data. The M99 also uses the [[ATLAS+]] system developed by [[Ohana Prescient Systems]].{{Ref/Reuse|HGN122}}
The M99 Stanchion was used by [[Corporal]] [[Avery J. Johnson]] during [[Operation: KALEIDOSCOPE]], using the weapon to assassinate [[Jerald Mulkey Ander]], a member of the [[Secessionist Union]] from a significant distance. He used another M99 Stanchion during [[Operation: TREBUCHET]] to kill an [[Insurrectionist]] terrorist driving a truck rigged as an explosive, and attempted to use it to neutralize a second terrorist inside a nearby restaurant, the [[Jim Dandy]]. His first target was successfully killed and torn apart by the force. The second target had killed herself with a bomb in the restaurant on [[Tribute]], along with three special warfare [[Marine]]s and thirty-two civilians.<ref name="CH"/>


==Ammunition==
===Ammunition===
The 5.4mm/.21 caliber round is very small in comparison to most standard firearms of the era, but using the Gauss technology, the small rounds have the ability to rip targets apart, even through office buildings.<ref name="CHP"/> This is due to the high speed of the round. The round creates shockwaves as it passes through the target. In the case of material targets, this is a minor explosion. In the case of personnel targets, it simultaneously rips apart and pulverizes the body part hit. Even hits in an extremity can be deadly.
The 5.4mm/.21 caliber round is very small in comparison to most standard firearms of the era, but using the Gauss technology, the small rounds have the ability to rip targets apart, even through office buildings.{{Ref/Reuse|CHP}} This is due to the high force imparted on the round via the Gauss acceleration method. The round creates shockwaves as it passes through the target and ripping through anything not as strong as a foot (30&nbsp;cm) of titanium. {{Ref/Reuse|Enc11}} In the case of material targets, this is a minor explosion and the creation of structural fractures. In the case of personnel targets, it simultaneously rips apart and pulverizes the body around the impact area. Even hits in an extremity or near-misses can be deadly.


The rounds have been known to have the ability to travel great distances without affecting the trajectory, delivering enough force to punch through [[instacrete]] pylons, blow a [[human]] apart, and continue on course through an abandoned parking lot. Being it holds the name 'Gauss' rifle, one can expect that is a rifle version of a [[MAC]] cannon, only on a much smaller scale.The round is so fast that it would only feel like a pin went through your body.&nbsp; &nbsp;
The rounds have been known to have the ability to travel great distances without affecting the trajectory, delivering enough force to punch through [[instacrete]] pylons, blow a [[human]] apart, and continue on course through an abandoned parking lot.


==Technology==
===Development and service history===
The technology used in the M99 is the practically the same concept used on the larger [[Mass driver|Mass Drivers]] and [[Magnetic Accelerator Cannon|MAC guns]], but on a much, much smaller scale. This system works through using a series of electromagnetic coils (an Asynch Linear-Induction Motor) rather than chemical propellants as a source of kinetic energy, and is very similar to the [[M68 Gauss Cannon]]. A weapon which utilizes this technology is needless to say, very powerful.
Developed by [[HRN]],{{Ref/Reuse|TweetHRN}} the M99 Special Application Scoped Rifle entered production in [[2491]], with production ceasing in [[2521]].{{Ref/Reuse|HGN122}} Though it was used mainly for anti-matériel operations, the .21 caliber round (with a muzzle velocity of 15,000 meters per second) proved very effective against "soft" targets such as personnel.<ref name="CHP">'''Halo: Contact Harvest''', ''Prologue''</ref>


The M99 is also used with a portable computer to provide the ballistic calculations necessary to engage long range targets. The rifle can also be integrated with other systems, such as [[ARGUS Drone|ARGUS Drones]] for trajectory and ballistic data.
In [[2502|March 2502]], then-[[Corporal]] [[Avery Johnson]] used an M99 Stanchion to [[Operation: KALEIDOSCOPE|assassinate]] [[Jerald Ander]], the leader of the [[Secessionist Union]] cell on [[Harvest]]. Johnson took the shot as the terrorist leader was driven by in an open-topped truck; Ander's head and upper torso were severed by the impact.{{Ref/Reuse|HGN122}} In [[2524]] during [[Operation: TREBUCHET]], Johnson used a Stanchion mounted on a shock-absorbing armature while flying in an [[AV-14 Hornet]], to kill an [[Insurrectionist]] terrorist driving a bomb-rigged truck; his first target was torn apart by the impact force. However, Johnson's second target detonated a bomb inside a [[Jim Dandy]] restaurant, killing herself, three [[UNSC Special Forces#Naval Special Warfare|Special Warfare]] Marines, and 38 civilians.{{Ref/Reuse|CH}}<ref>'''Halo: Contact Harvest''', ''page 86''</ref> Early on during the [[Human-Covenant War]] in March [[2526]] [[Blue Team]], [[Gold Team]], and [[Green Team]] utilized M99 Stanchions during [[Skirmish over Netherop|an attempt]] to capture the [[Covenant frigate]] ''[[Radiant Arrow]]''.<ref name="HSS2">'''[[Halo: Silent Storm]]''', ''Chapter 2''</ref>


The M-99 also uses the ATLAS+ system developed by [[Ohana]].<ref name="HGN122" />
Shortly after the [[Subjugation of Earth]], [[Spartan-IV]] [[Kojo Agu]] used an M99 Stanchion given to him by the [[United Rebel Front]] while on [[Cassidy III]] to destroy the [[data pad]] that the [[Created]] [[Smart AI]] [[Leonidas]] was stored in. Production of the rifle had since ceased and Agu considered the weapon to be "old-school." <ref name="HBB">'''[[Halo: Bad Blood]]'''</ref> As late as April [[2559]], [[snipers]] assigned to the {{UNSCShip|Spirit of Fire}} used the [[M99A2S3 Stanchion]],<ref>'''[[Halo Wars 2]]'''</ref> a variant of the weapon constructed on the ''Spirit of Fire'' using a design template created by the [[Smart AI]] [[Isabel]] and given the code "ISABEL-2558-01-00023."<ref>[https://twitter.com/JeremyCook3D/status/950541458829844480 '''Twitter''' ''- Jeremy Cook M99A2S3 breakdown'']</ref> During a mission on [[Arcadia]] in [[2560]], [[August-099]] of [[Omega Team]] was equipped with an M99A2S3 Stanchion.{{Ref/Novel|Id=Hippo|Halo: Hippocratica}}
 
==Variants==
*'''[[M99A2S3 Stanchion]]''': The M99A2S3 is a variant of the M99 that has an inertia buffer that helps manage recoil.<ref>[https://twitter.com/JeremyCook3D/status/950592593376628741 '''Twitter''' ''- Jeremy Cook on the inertia buffer'']</ref>
<gallery>
File:M99 Stanchion.png|The M99A2S3 variant.
File:HW2 M99A253 Stanchion.jpg|M99A2S3 breakdown.
File:HW2Jeremy-cook-hw2-stanchion-orthos-2.jpg|M99A2S3 breakdown.
</gallery>
 
==Gameplay==
{{Main|Sniper|Sniper Rifle}}
The weapon is used by [[Sniper]] units in ''[[Halo Wars 2]]'', once the Stanchion upgrade is obtained.{{Ref/Game|HW2|unit|Detail=Sniper}}


==Trivia==
==Trivia==
*The Stanchion is an anti-material weapon designed for eliminating explosive ordinance and light armored [[vehicle]]s at a distance, but also functions extremely well as an anti-personnel weapon.
*The M99 shares its designation with the real-life Barrett Model 99 single shot sniper rifle, a derivative of the Barrett M107A1 anti-materiél rifle.
*In reality, there is a firearm designated as the M99 which fires a .50 caliber round; The [[wikipedia:Barrett_M99|Barrett M99]]. There is also a [[Chinese]] [[sniper rifle]] designated as the M99. It fires a 12.7mm (.50 Caliber) bullet as well. <ref> http://www.sinodefence.com/army/small_arms/m99_sniper.asp </ref>
*In some sources the M99 is referred to as "recoilless" but it is not clear whether it is technically a "recoilless" weapon or if this is a mistaken designation. If it is "recoilless" the manner by which it counteracts recoil is not known, as modern day "recoilless rifles" either eject propellant gas or a "countershot" of material with equal mass as the projectile, but no source has ever mentioned either of these recoil countering mechanisms on the M99. If the M99 is "recoilless" it may be that it has some as-of-yet theoretical way to reduce recoil, perhaps involving magnetic fields.
*It seems very similar to the [[M68 Gauss Cannon]] found on [[Warthog]]s.
*The [[British]] designed "Boys Anti Tank Rifle Mark 1" was originally named the Stanchion, before the death of one of its designers caused a name change.
*It is likely that some of these rifles were used during the [[Human-Covenant War]], although this is unconfirmed, but one would consider them extremely effective against the Covenant's energy shields.
*Since the M99 Stanchion lacks a [[muzzle brake]], the recoil of firing a weapon of that caliber is transferred into the shooter's shoulder, and is speculated that the recoil must be tremendous.
*The M67 Recoilless Rifle was used by American Paratroopers during World War II. They were used as an anti-tank weapon and fired an explosive shell, for massive damage and minimum recoil.


==External Links==
==Gallery==
*[http://en.wikipedia.org/wiki/Stanchion The Stanchion on Wikipedia]
<gallery>
File:HGN-P122-LogoStanchion.png|The logo for HRN, the M99 Stanchion's manufacturer.
File:AssassinAvery.png|Avery Johnson using an M99 Stanchion.
File:HINF AugustOnArcadia.jpg|August-099 wielding an M99A2S3 Stanchion.
</gallery>
 
==List of appearances==
*''[[Halo Graphic Novel]]''
**''[[Halo Graphic Novel, Page 122|Page 122]]'' {{1st}}
*''[[Halo: Contact Harvest]]''
*''[[Halo Wars 2]]''
*''[[Halo: Bad Blood]]''
*''[[Halo: Silent Storm]]''
*''[[Halo Infinite]]''
*''[[Halo: Hippocratica]]''


==Sources==
==Sources==
<references/>
{{Ref/Sources}}
 
==Related Pages==
*[[Halo Graphic Novel Pg122|Halo Graphic Novel, Page 122]]
*[[United Nations Space Command]]
*[[SRS99C-S2 AM Sniper Rifle]]
*[[Halo: Contact Harvest]]
 


{{UNSC Infantry Weapons}}
{{UNSC rifles}}
[[Category:UNSC]]
[[Category:Magnetic acceleration weapons]]
[[Category:Weapons]]
[[Category:Held Weapons]]
[[Category:Human Weapons]]
[[Category:Human]]

Latest revision as of 13:55, February 25, 2024

M99 Special Application Scoped Rifle
Stanchion.jpg
Production overview

Manufacturer:

HRN[1]

Type:

Magnetic anti-matériel rifle

Specifications

Length:

(o/a): 67 inches (170 cm)[2]

Weight:

20.0 kilograms (44 lb)[2]

Ammunition type:

5.4mm/.21 caliber[2]

Feed system:

10 rounds[2]

Operation:

Semi-automatic

Muzzle velocity:

15,000 meters/second (9.3 miles/second)[2]

Effective range:

7.5 kilometres (4.7 mi)[2]

Service history

In service:

Insurrection
Human-Covenant War
Post-Covenant War conflicts
Created conflict

 

The M99 Special Application Scoped Rifle, also referred to as the M99 Stanchion Gauss rifle or simply the Stanchion, is a United Nations Space Command anti-matériel rifle.[2][3][4]

Design and development[edit]

Design details[edit]

The M99 works on the same operational principles as other magnetic weapons such as mass drivers and Magnetic Accelerator Cannons, albeit on a much smaller scale. This system works through using a series of electromagnetic coils (an asynchronous linear induction motor) rather than chemical propellants as a source of kinetic energy. The M99's weight and bulk limit the weapon's use to highly specialized long-range precision sniping roles.[5][verification needed] It is typically used in extreme-range sniping and anti-materiel roles, but the recoilless nature of the weapon makes it ideal for fighting in microgravity as it does not send the wielder into an uncontrollable spin, such as during boarding actions and EVA.[6]

The M99 can be used with a portable computer to provide the ballistic calculations necessary to engage long range targets. The rifle can also be integrated with other systems, such as ARGUS drones for trajectory and ballistic data. The M99 also uses the ATLAS+ system developed by Ohana Prescient Systems.[3]

Ammunition[edit]

The 5.4mm/.21 caliber round is very small in comparison to most standard firearms of the era, but using the Gauss technology, the small rounds have the ability to rip targets apart, even through office buildings.[7] This is due to the high force imparted on the round via the Gauss acceleration method. The round creates shockwaves as it passes through the target and ripping through anything not as strong as a foot (30 cm) of titanium. [2] In the case of material targets, this is a minor explosion and the creation of structural fractures. In the case of personnel targets, it simultaneously rips apart and pulverizes the body around the impact area. Even hits in an extremity or near-misses can be deadly.

The rounds have been known to have the ability to travel great distances without affecting the trajectory, delivering enough force to punch through instacrete pylons, blow a human apart, and continue on course through an abandoned parking lot.

Development and service history[edit]

Developed by HRN,[1] the M99 Special Application Scoped Rifle entered production in 2491, with production ceasing in 2521.[3] Though it was used mainly for anti-matériel operations, the .21 caliber round (with a muzzle velocity of 15,000 meters per second) proved very effective against "soft" targets such as personnel.[7]

In March 2502, then-Corporal Avery Johnson used an M99 Stanchion to assassinate Jerald Ander, the leader of the Secessionist Union cell on Harvest. Johnson took the shot as the terrorist leader was driven by in an open-topped truck; Ander's head and upper torso were severed by the impact.[3] In 2524 during Operation: TREBUCHET, Johnson used a Stanchion mounted on a shock-absorbing armature while flying in an AV-14 Hornet, to kill an Insurrectionist terrorist driving a bomb-rigged truck; his first target was torn apart by the impact force. However, Johnson's second target detonated a bomb inside a Jim Dandy restaurant, killing herself, three Special Warfare Marines, and 38 civilians.[4][8] Early on during the Human-Covenant War in March 2526 Blue Team, Gold Team, and Green Team utilized M99 Stanchions during an attempt to capture the Covenant frigate Radiant Arrow.[6]

Shortly after the Subjugation of Earth, Spartan-IV Kojo Agu used an M99 Stanchion given to him by the United Rebel Front while on Cassidy III to destroy the data pad that the Created Smart AI Leonidas was stored in. Production of the rifle had since ceased and Agu considered the weapon to be "old-school." [9] As late as April 2559, snipers assigned to the UNSC Spirit of Fire used the M99A2S3 Stanchion,[10] a variant of the weapon constructed on the Spirit of Fire using a design template created by the Smart AI Isabel and given the code "ISABEL-2558-01-00023."[11] During a mission on Arcadia in 2560, August-099 of Omega Team was equipped with an M99A2S3 Stanchion.[12]

Variants[edit]

  • M99A2S3 Stanchion: The M99A2S3 is a variant of the M99 that has an inertia buffer that helps manage recoil.[13]
  • The M99A2S3 variant.

    The M99A2S3 variant.

  • M99A2S3 breakdown.

    M99A2S3 breakdown.

  • M99A2S3 breakdown.

    M99A2S3 breakdown.

Gameplay[edit]

Main articles: Sniper, Sniper Rifle

The weapon is used by Sniper units in Halo Wars 2, once the Stanchion upgrade is obtained.[14]

Trivia[edit]

  • The M99 shares its designation with the real-life Barrett Model 99 single shot sniper rifle, a derivative of the Barrett M107A1 anti-materiél rifle.
  • In some sources the M99 is referred to as "recoilless" but it is not clear whether it is technically a "recoilless" weapon or if this is a mistaken designation. If it is "recoilless" the manner by which it counteracts recoil is not known, as modern day "recoilless rifles" either eject propellant gas or a "countershot" of material with equal mass as the projectile, but no source has ever mentioned either of these recoil countering mechanisms on the M99. If the M99 is "recoilless" it may be that it has some as-of-yet theoretical way to reduce recoil, perhaps involving magnetic fields.

Gallery[edit]

  • The logo for HRN, the M99 Stanchion's manufacturer.

    The logo for HRN, the M99 Stanchion's manufacturer.

  • Avery Johnson using an M99 Stanchion.

    Avery Johnson using an M99 Stanchion.

  • August-099 wielding an M99A2S3 Stanchion.

    August-099 wielding an M99A2S3 Stanchion.

List of appearances[edit]

Sources[edit]

  1. ^ a b Twitter, Halo (@Halo): ""Manufacturer: HRN" (From the video within the tweet.)" (Retrieved on Feb 25, 2024) [archive]
  2. ^ a b c d e f g h Halo Encyclopedia (2011 edition), page 324
  3. ^ a b c d Halo Graphic Novel, Page 122
  4. ^ a b Halo: Contact Harvest, page 16
  5. ^ Halo Waypoint: Railgun
  6. ^ a b Halo: Silent Storm, Chapter 2
  7. ^ a b Halo: Contact Harvest, Prologue
  8. ^ Halo: Contact Harvest, page 86
  9. ^ Halo: Bad Blood
  10. ^ Halo Wars 2
  11. ^ Twitter - Jeremy Cook M99A2S3 breakdown
  12. ^ Halo: Hippocratica
  13. ^ Twitter - Jeremy Cook on the inertia buffer
  14. ^ Halo Wars 2, unit: Sniper

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