Editing M99A2S3 Stanchion

{{Status|Canon}}
{{Weapon infobox
|name=M99A2S3 Special Application Scoped Rifle
|image=[[File:M99 Stanchion.png|300px]]
|manufacturer={{UNSCShip|Spirit of Fire}}{{Ref/Site|Id=CF100|URL=https://www.halowaypoint.com/en-us/news/sweet-centennial|Site=Halo Waypoint|Page=Canon Fodder - Sweet Centennial|D=24|M=09|Y=2021}}{{Ref/Twitter|Id=breakdown|JeremyCook3D|950541458829844480|Jeremy Cook|Quote=Ok, I made some orthos of the Stanchion for ya today.|D=30|M=01|Y=2024}}
|series=[[M99 Stanchion|M99 Series]]{{Ref/Reuse|CF100}}
|type=Recoilless anti-matériel [[rifle]]{{Ref/Reuse|CF100}}
|cost=
|variant=
|service=[[Post-Covenant War conflicts]]{{Ref/Reuse|CF100}}
|length={{Convert|208.7|cm|in|sp=us}}{{Ref/Twitter|JeremyCook3D|953351399785443328|Jeremy Cook|Quote=we come up with 208.7 cm for stanchion.|D=30|M=01|Y=2024}}
|width=
|height=
|weight=
|ammotype=APFSDS rounds{{Ref/Reuse|breakdown}}
|capacity=7 rounds{{Ref/Reuse|breakdown}}
|feed=
|operation=[[Coilgun]]{{Ref/Book|Id=Enc22|Enc22|Page=171}}
|rate=
|velocity=
|optics=Smart-link compatable [[ATLAS HISHOT PRO-X]] scope{{Ref/Reuse|CF100}}
|range=
}}
The '''M99A2S3 Special Application Scoped Rifle''' is a weapon in the [[M99 Stanchion]] series of high-powered anti-materiel rifles in the service of the [[United Nations Space Command]].{{Ref/Reuse|CF100}}

==Overview==
[[File:HW2_Sparks.png|thumb|left|250px|An M99A2S3 Stanchion in use by [[Devon Sparks]], the sniper for [[Sunray 1-1]].]]
===Design details===
The Stanchion is built on a frame similar to that of the [[SRS99-AM sniper rifle]]. Unlike the SRS99, however, the Stanchion is a [[coilgun]], and has more in common with [[Gauss cannon]]s and larger [[Naval autocannon|naval guns]] in terms of operation than a regular firearm. The weapon is powered by an Asychronous Linear Induction Motor (ALIM), capable of accelerating its munitions to several thousand metres per second.{{Ref/Reuse|Enc22}} Accordingly, the receiver and barrel of the Stanchion are much bulkier than a conventional sniper rifle, with a protective housing visually reminiscent of the [[ARC-920 railgun]]. The Stanchion is renowned for overpenetration and collateral damage, making it extremely effective against its targets. The high muzzle velocity of the weapon makes it extremely powerful and accurate at long distances.{{Ref/Reuse|Enc22}}

Midway down the barrel, the M99A2S3 is located with an inertia buffer designed to help lessen the recoil produced when firing the weapon.{{Ref/Twitter|JeremyCook3D|950592593376628741|Jeremy Cook|Quote=Think hightec recoil management.|D=30|M=01|Y=2024}} The fore of the rifle features a bipod that can be folded back and secured on the weapon. The rifle is compatible with an [[ATLAS HISHOT PRO-X]] optic, capable of being [[Smart-linking|smart-linked]] with an operator's [[heads-up display]].{{Ref/Reuse|CF100}}{{Ref/Reuse|breakdown}}

Unlike the standard M99 Stanchion rifle, the M99A2S3 does not appear to require an external [[generator]] to power the weapon. As such, this leaves the operator free to move around the battlefield rather than stay anchored to one shooting location. Likewise, the M99A2S3 does not appear to require the use of an external targeting computer.{{Ref/Game|HW2|Sunary 1-1 in-game unit}}

===Ammunition===
The Stanchion fires [[tungsten]] penetrator darts, with a muzzle velocity of several thousand metres per second.{{Ref/Reuse|Enc22}} The darts are stored in a disposable burn-up casing that contains a [[Wikipedia:Sabot (firearms)|sabot]] and the dart itself. The weapon's detachable box magazine is capable of holding 7 rounds before a reload is required.{{Ref/Reuse|breakdown}}

===Development history===
M99A2S3 Stanchions are capable of being manufactured aboard the {{Class|Phoenix|colony ship}}'s internal factory modules. In [[2558]], the [[Smart AI]] [[Isabel]] created a design template for the weapon on [[Installation 00|the Ark]], given the code "ISABEL-2558-01-00023". This design template was later put to manufacture following the arrival of {{UNSCShip|Spirit of Fire}} to the installation in [[2559]], with Stanchions built in manufacturing block 23-CELL-14.{{Ref/Reuse|breakdown}}

==Usage==
During the [[Second Ark Conflict]], the M99A2S3 Stanchion was used by [[Lance Corporal]] [[Devon Sparks]] of [[Sunray 1-1]], and had achieved at least 17 kills with it. Sparks also customized his weapon with tally marks for every kill, a [[Camouflage|Dazzle camo pattern]], and two charms; a Scorpio charm and an ODST Talisman.{{Ref/Reuse|CF100}}

==In-game information==
===''Halo Wars 2''===
The Stanchion features in ''[[Halo Wars 2]]'' as a weapon that can be equipped by UNSC [[Sniper]] units. By default, snipers in ''Halo Wars 2'' do not equip Stanchions by default but instead use [[Signature-suppressed anti-materiel rifle|integrally-suppressed anti-materiel rifles]] more in line with a conventional ballistic rifle. The Stanchion sniper rifle is the second upgrade available for the Snipers and can be purchased for a cost of {{HW2Supplies|0}}, {{HW2Power|750}}.

The M99A2S3 Stanchion rifle is used in the ''[[Halo Wars 2: Operation: SPEARBREAKER|Operation: SPEARBREAKER]]'' expansion for ''[[Halo Wars 2]]'' as a unique weapon equipped by [[Devon Sparks]], the sniper of [[Sunray 1-1]]. Sunray 1-1 (and by extension, the Stanchion) only feature in the levels [[Gatecrashers]] and [[Not on My Watch]].

===''Halo Infinite''===
The M99A2S3 Stanchion is useable in ''[[Halo Infinite]]'' as a [[Weapon customization|cosmetic weapon model]] introduced in [[Content Update 29]]. The weapon can be applied as a cosmetic appearance for the [[SRS99-S7 AM sniper rifle]], and features no gameplay/mechanical changes.
{| class="wikitable sortable" style="width: 100%;"
|-align="center"
|-
! scope="col" style="width: 15%" |Weapon Model
! scope="col" style="width: 15%" |Manufacturer
! scope="col" style="width: 40%" |Lore
! scope="col" style="width: 10%" |Rarity
! scope="col" style="width: 20%" |Unlock Requirements

|-
|align="center"|[[File:HINF M99A2S3Stanchion Icon.png|75px]]<br/>M99A2S3 Stanchion
|UNSC
|"Traveling at fifteen thousand meters per second, the round whistled over the highway and hit [[Jerald Ander|the target]] at the apex of his sternum. The man flew to pieces as the round buried itself in a rooster tail of pulverized asphalt."<br/><br/>-- [[Halo: Contact Harvest]]
|Legendary
|Purchase "Stanchion" Bundle from the [[Shop]] for 1,800 cR
|}

==Gallery==
{{Linkbox|gallery=yes|gallerypage=Images of M99 Stanchion}}
<gallery>
File:HW2 M99A253 Stanchion.jpg|M99A2S3 breakdown for ''[[Halo Wars 2]]''.
File:HW2Jeremy-cook-hw2-stanchion-orthos-2.jpg|Alternate M99A2S3 breakdown.
File:HINF-M99A2S3Stanchion.jpg|The M99A2S3 Stanchion as [[Weapon customization|a weapon model]] for the [[SRS99-S7 AM sniper rifle]] in ''[[Halo Infinite]]''.
File:HINF Stanchion Menu Screenshot.png|The M99A2S3 in the menu for ''Halo Infinite''.
File:HINF ODSTStanchion Screenshot 1.png|A Spartan using the Stanchion in ''Halo Infinite''.
File:HINF ODSTStanchion Screenshot 2.png|A Spartan using the Stanchion in ''Halo Infinite''.
File:HINF CatalystDuo.png|A Spartan (left) wielding the Stanchion.
</gallery>

==List of appearances==
*''[[Halo Wars 2]]'' 
**''[[Halo Wars 2: Operation: SPEARBREAKER]]'' {{1st}}
*''[[Halo Infinite]]''
**[[Content Update 29]]
*''[[Halo: Hippocratica]]''

==Sources==
{{Ref/Sources}}

{{UNSC rifles}}
[[Category:Magnetic acceleration weapons]]