Editing ST AR-15 (section)

{{PlayableUnit
|index = 57
|nationality = United States
|classification = AR
|rarity = 4
|faction = [[AR Team]], [[Griffin & Kryuger]], {{spoiler|[[DEFY]]}}
|manufactureringame = [[16LAB]]
|manufacturer = Spikes Tactical
|artist = {{artist name|LIN+}} (Original Artist);<br/>
{{artist name|STAR影法师}} (Top Hat Drifting to the Flowers);<br/>
{{artist name|暖森}} (Breeze on a Spring Day);<br/>
{{artist name|umo}} (Owl Latte)
|fullname = Spikes Tactical 10th Anniversary AR-15, Spikes Tactical Pipe Hitters SBR (Mod 3 Secondary Armament)
|voiceactor = {{voice actor name|Katou Emiri}}
|releasedon = {{doll_server_alias|server=CN|alias=ST AR-15|year=2016|month=5}}, {{doll_server_alias|server=TW|alias=ST AR-15}}, {{doll_server_alias|server=KR|alias=ST AR-15}}, {{doll_server_alias|server=EN|alias=ST AR-15}}, {{doll_server_alias|server=JP|alias=ST AR-15}}

|weaponinfo =
The AR-15 is a lightweight, magazine-fed, air-cooled semi-automatic rifle with a rotating-lock bolt, actuated by direct impingement gas-operation or long/short stroke piston operation, and chambered for an intermediate caliber cartridge. The term "AR-15" stands for "Armalite rifle, design 15". The trademark "AR15" or "AR-15" is registered to Colt, which requires the term to be used only to refer to their products. Colt uses "AR-15" for its semi-automatic civilian rifles, and thus many use the term only for Colt-made AR-15 rifles and clones made by other manufacturers. 

Many other manufacturers make AR-15 clones and variants marketed under separate designations, although these are frequently referred to as AR-15s. The prototype AR-15 rifle was designed by American arms designer Eugene Stoner, who at the time was working for the ArmaLite company. It was designed to be a selective fire weapon for military purposes, and was meant to be an improvement on Stoner's earlier rifle, the AR-10. Armalite sold the AR-15 design to Colt due to financial difficulties. After some modifications, the rifle eventually became the US Army's M16 rifle. A civilian version was marketed as the Colt AR-15 rifle.<ref name = "AR15 wiki">[[wikipedia:List of Colt AR-15 variants|Wikipedia entry on AR-15 variants]]</ref>

Because AR-15 receivers and parts are widely manufactured, the weapon is considered extremely modular and adaptable to a variety of different functions, uses, and firing performances. Various receivers and barrels in a wide array of calibers allow the AR-15 to function at many different ranges and in a number of roles. Many aftermarket parts can provide the rifle with a tactical feel, with options ranging from picatinny rails to MLOK allowing different accessories to be mounted on the rifle.

|design =
ST AR-15 is designed by the Concept Design Manager of MICA Team, LIN+. LIN+ commented on AR-15's design in the official artbook for Girls Frontline<ref name="artbook">{{cite|ab1|197-198}}</ref>:

All four members of AR Team are sister guns derived from the original AR-15 designed by Eugene Stoner. When it came to designing her, a lot of reference were made to M4A1, whose design had already been finalized at the time by UmiNeko. Various design features such as a selectively dyed side fringe, sleeve logo, color palette, and various other elements. （AR小队的四个人都是由尤金·斯通纳设计的AR15原型发展而来的姐妹枪，所以设计的时候也参考了海猫当时已经完成的M4A1，选取了共同的挑染，袖标，和标识色等元素。）

At the same time, the costume leans more towards a civilian feel. I chose things such as leather boots and skirts, combinations reflecting her background as a civilian firearm.（同时在服装上更偏向日常，选用了皮鞋和连衣裙等比较常见的搭配，以贴合AR15民用枪支的属性。）

Considering AR-15 is a more outgoing girl, her early drafts had more fashionable/flamboyant clothing designs. However, considering her role within the AR Team and the fact that excessively complex outfits can lead to a lack of deviation in future artworks, her outfit was simplified for the finalized design.（早期设定可以看出，以前的AR15性格上是比较活泼的，服装也比较复杂，后来考虑到小队里的角色定位，以及服装太复杂可能会影响同人创作而做了简化。）

The rifle she uses is based off the Spikes Tactical 10th anniversary AR-15. It sports a 16" barrel and a longer hang-guard. After receiving her neural upgrade, ST AR-15's main rifle has its receiver group changed to a MEGA ARMS-made .300 BLK compatible receiver. She also gained a sidearm with the upgrade. Her secondary armament is the Spikes Tactical Pipe Hitters 8" barrel Short Barrel Rifle, also modified to chamber .300 BLK.

|min_dmg= 17
|max_dmg= 48
|min_eva= 6
|max_eva= 50
|min_acc= 6
|max_acc= 50
|min_rof= 52
|max_rof= 77
|min_hp= 53
|max_hp= 105
|mov= 10

|moddable=1
|mod1_max_hp=106
|mod1_max_dmg=49
|mod1_max_acc=54
|mod1_max_eva=51
|mod1_max_rof=78
|mod2_max_hp=107
|mod2_max_dmg=49
|mod2_max_acc=54
|mod2_max_eva=51
|mod2_max_rof=78
|mod3_max_hp=108
|mod3_max_dmg=50
|mod3_max_acc=55
|mod3_max_eva=52
|mod3_max_rof=78

|slot2=accessory
|slot3=magazine

|nonormalcraft=1
|noheavycraft=1
|nodrop=1
|reward= Rewarded to players after clearing chapter 3-6 for the first time. This {{doll name|ST AR-15|AR|4}} will be Lv.40 and at 3x Dummy Links.

|aura1= Affects submachine guns
|aura2= Increases evasion by 12%
|aura3= Increases rate of fire by 10%
|mod1_aura1= Affects submachine guns
|mod1_aura2= Increases evasion by 15%
|mod1_aura3= Increases rate of fire by 10%
|tile3= 1
|tile6= 1
|tile9= 1
|tile5= 0 

|equipsetname=16LAB Custom "ST AR-15"
|equipsetdesc=With a full set of 16LAB special equipment, ST AR-15 receives a powerful boost to her combat performance, and her secondary weapon also becomes more wieldy.
|equipset3=The secondary weapon deals guaranteed damage that ignores armor, increase self damage by 6% for each unit that leaves the battle, stacking up to 10 times, lasting until the end of the current battle.

|costume1 = Literary Girl
|costume2 = [Neural Upgrade]
|costume3 = Dreamscape Prisoner
|costume4 = Top Hat Drifting to the Flowers
|costume5 = Breeze on a Spring Day
|costume6 = Summer Afternoon Leisure
|costume7 = Owl Latte
|costume8 = costume8

|gallery=<gallery>
File:ST AR-15_S.png|Profile image
File:ST AR-15.png|Full artwork
File:ST AR-15_D.png|Full damaged artwork
File:ST AR-15_costume2_S.png|{{spoiler|Neural Upgrade}}
File:ST AR-15_costume2.png|{{spoiler|Neural Upgrade full artwork}}
File:ST AR-15_costume2_D.png|{{spoiler|Neural Upgrade full damaged artwork}}
File:ST AR-15_costume1.png|"Literary Girl" full artwork
File:ST AR-15_costume1_D.png|"Literary Girl" full damaged artwork
File:ST AR-15_costume3.png|"Dreamscape Prisoner" full artwork
File:ST AR-15_costume3_D.png|"Dreamscape Prisoner" full damaged artwork
File:ST AR-15_costume4.png|"Top Hat Drifting to the Flowers" full artwork
File:ST AR-15_costume4_D.png|"Top Hat Drifting to the Flowers" full damaged artwork
File:ST AR-15_costume5.png|"Breeze on a Spring Day" full artwork
File:ST AR-15_costume5_D.png|"Breeze on a Spring Day" full damaged artwork
File:ST AR-15_costume6.png|"Summer Afternoon Leisure" full artwork
File:ST AR-15_costume6_D.png|"Summer Afternoon Leisure" full damaged artwork
File:ST AR-15_costume7.png|"Owl Latte" full artwork
File:ST AR-15_costume7_D.png|"Owl Latte" full damaged artwork
File:ST AR-15_costume8.png|
File:ST AR-15_costume8_D.png|
</gallery>

|galleryAlt=<gallery>
File:CHARACTER SETTINGS ST AR-15 (EN).jpg|Official EN character Introduction for AR-15
File:ST AR-15_costume3_(Censored).png|"Dreamscape Prisoner" full artwork (Censored)
File:AR15Mod 6.png|{{spoiler|After {{doll name|M4 SOPMOD II|AR|5|costume=costume1}}'s prank in [[Mirror Stage]]}}
File:AR15Mod 7.png
File:ST AR-15 character sheet (lower body).jpg|Section of ST AR-15's page from The Arts of Girls' Frontline volume 1, showcasing character costume design below the coat.<ref name="moegirl">[https://zh.moegirl.org/%E5%B0%91%E5%A5%B3%E5%89%8D%E7%BA%BF:ST_AR-15#/media/File:Ar15%E4%B8%8B%E8%BA%AB%E8%AE%BE%E5%AE%9A.jpg Design image retrieved from Moegirl]</ref>
File:ST AR-15 Mod 3 character sheet (doll).png|{{spoiler|Modification 3 character design sheet produced by LIN+ (Doll)<ref name="booru">[https://danbooru.donmai.us/posts/3127557 Design image no longer available on artist Pixiv, image retrieved from Danbooru and separated into sections]</ref>}}
File:ST AR-15 Mod 3 character sheet (weapon).png|{{spoiler|Modification 3 character design sheet produced by LIN+ (Weapon)<ref name="booru"></ref>}}
File:ST AR-15 Mod 3 character sheet (ending).png|{{spoiler|Modification 3 character design sheet produced by LIN+ (Ending)<ref name="booru"></ref>}}
File:DEFY Wallpaper by LIN+.jpg|{{spoiler|ST AR-15 centered DEFY wallpaper produced by LIN+<ref name="pixiv">[https://www.pixiv.net/member_illust.php?mode=medium&illust_id=68794990 Image retrieved from artist Pixiv]</ref>}}
File:Login Wallpaper 2019 April Fools.jpeg|2019 CN Servers [[April Fools]] login wallpaper
File:Shattered Connexion Login Wallpaper.png|{{spoiler|[[Shattered Connexion]] stage 1 login wallpaper Illustrated by 藤原海藻}}
File:Shattered Connexion Login Wallpaper2.png|{{spoiler|[[Shattered Connexion]] stage 2 login wallpaper Illustrated by Paindude}}
File:Shattered Connexion Login Wallpaper3.png|{{spoiler|[[Shattered Connexion]] stage 3 login wallpaper Illustrated by SWAV}}
File:Sleepwalking in Rabbit Wonderland Login Wallpaper.png|"Sleepwalking in Rabbit Wonderland" Login wallpaper illustrated by STAR影法师
File:Banquet Sonata Login Wallpaper.png|"Banquet Sonata" Login wallpaper illustrated by 薯子Imoko
File:Losin Screen June 2023.jpg|June 2023 Login Screen.
File:Login Screen Holidays 2023.png|Holidays 2023 Login Screen.
File:Login Screen Holidays 2023 JP.png|Holidays 2023 Login Screen (JP server).
File:Maiden's Afternoon Prelude Login Wallpaper.jpg|"Maiden's Afternoon Prelude" Login wallpaper illustrated by ???
File:Girls Frontline Orchestra 2018 promotion poster.jpg|[[Girls' Frontline Concerts|Girls Frontline Orchestra 2018]] promotion poster, character art illustrated by Duoyuanjun
</gallery>

|trivia =
*ST AR-15 and {{doll name|M4 SOPMOD II|AR|4}} are the only two dolls able to equip two accessory-type equipment pieces at the same time.  
*For 4 years, she was the only member of the AR Team that had an additional costume outside of her {{spoiler|Neural Upgrade}}. This is no longer the case with the introduction of the "Sleepwalking in Rabbit Wonderland" costume sets and the 4th anniversary procurement pool "Banquet Sonata" for the CN server.
**Her Summer Afternoon Leisure costume is the first to be unlocked through the Battle Pass system.
*She is the only automatic rifle T-Doll in the AR Team to use the .300 BLK cartridge. The cartridge was designed in response to military demand for AR-15s using a shortened 7.62mm round, without compromising on magazine capacity or reliability. The .300 BLK is capable of fitting inside 5.56x45mm STANAG magazines with no issues, although the gun itself needs to have it's barrel switched to the correct bore size in order to fire the cartridge without destroying it in the process.
*During [[Singularity]] ST AR-15 was an obtainable drop from the hidden mission of E2 "Survivor" (CN/TW/KR Only), as a means of providing a 'second chance' for players who ignored all in-game warnings and retired their copy of ST AR-15. Though players can only obtain her through this way once, and those who already have a unit of ST AR-15 in their arsenal cannot obtain a duplicate through this way. Losing AR Team members is no longer possible after the introduction of the index recovery system, but during [[Cartesian Theater]], players were offered a chance to get a duplicate of one AR Team member.
*Despite the fact that she is both named after and is using a Spikes Tactical-made AR-15, in her formation quote she still addresses herself as 'Colt AR-15'. This is likely a mistake.
*In the [[Girls' Frontline: Doll's Song|official Chinese manhua]], it is revealed that ST AR-15 wears a harness under her coat that stores pistol magazines.
*The placement of her angled foregrip would likely make handling the weapon awkward as AR-15's arms may be too short to properly maintain a firing stance at the distance her foregrip is set to. It does look pretty cool, though.
**The forward placement of the foregrip is likely a reference to MAGPUL's Art of the Carbine series starring former special forces members Chris Costa and Travis Haley, in which they teach the viewers the c-clamp and thumb-over-bore shooting techniques that eventually popularized the "tacticool" tropes in pop culture. Said video would go on to become a massive influence on modern gun culture--most notably in America and Japan. The technique involved gripping the handguard of the rifle as far forward as possible in order to maximize recoil management and allow the user to more quickly engage multiple targets by increasing their ability to drive the rifle from target to target. While the technique is not as widespread as it once used to be, some variations and fundamentals of it are still utilized in modern shooting stances and techniques by both high level competition shooters and special operations units throughout the world. The angled foregrip ST AR-15 uses on her rifle was originally designed by Magpul specifically to improve the operator's ability to utilize c-clamp and thumb-over-bore techniques more effectively while shooting.
**A rough estimate of ST AR-15's height based on the barrel length of her rifle would put her at around roughly 5'0 or 152 cm. This would make attempting to c-clamp the rifle at the position of the angled foregrip with someone of her stature quite difficult.
*In the opening scene of the [[Chibi Dolls Theater|Girls' Frontline: Healing Chapter anime]], ST AR-15 is shown firing her weapon in automatic fire. While officially a civilian AR-15 is not capable of automatic fire, it is entirely possible to have it do so by either jury-rigging an automatic trigger sear (which is not recommended, unless one is an experienced gunsmith), or replacing the entire trigger assembly with that of a mil-spec AR-15 platform capable of doing so.
**It is possible for ST AR-15 to achieve pseudo-automatic fire through the use of a binary trigger or a forced reset trigger, which allows the AR-15 platform to simulate automatic fire by resetting the trigger of the gun as the gun cycles. It is not normally possible to install an auto sear in an AR-15 platform as the lower receiver intentionally lacks the compartment to house the auto sear. 
*The 16-inch barrel that ST AR-15 uses is actually the shortest legal length that a rifle can be configured in for the American civilian market.
**The actual length of a AR-15 barrel after the installation of a muzzle device sits at about roughly 17.5 inches.
*AR-15 is featured on the covers of [[Girls' Frontline Original Soundtrack]] and the first set of [[Mankind Is No longer Solitary]].
|}}