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M4 SOPMOD II: Difference between revisions

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|faction = [[AR Team]], [[Griffin & Kryuger]]
|faction = [[AR Team]], [[Griffin & Kryuger]]
|manufactureringame = [[16Lab]]
|manufactureringame = [[16Lab]]
|manufacturer = Knight's Armament Company、Atlantic Research Marketing Systems、Lewis Machine & Tools、Daniel Defense, U.S. Ordnance, Bushmaster Firearms International and many others
|manufacturer = Colt's Manufacturing/Colt Defense, Daniel Defense, Badger Ordnance, Knight's Armament, EOTech, ELCAN, Insight Technology, L3Harris, Surefire, LMT Defense, and others
|artist = {{artist name|海猫络合物}} (Original Artist);<br/>
|artist = {{artist name|海猫络合物}} (Original Artist);<br/>
{{artist name|ZAGALA}} ({{spoiler|Neural Upgrade}});<br/>
{{artist name|ZAGALA}} ({{spoiler|Neural Upgrade}});<br/>
Line 14: Line 14:
{{artist name|Su}} (Resurrection Repairer Jr);<br/>
{{artist name|Su}} (Resurrection Repairer Jr);<br/>
{{artist name|umo}} (Racing Parfait)
{{artist name|umo}} (Racing Parfait)
|fullname = M4 SOPMOD Block II
|fullname = M4A1 SOPMOD Block II
|voiceactor = {{voice actor name|Tamura Yukari}}
|voiceactor = {{voice actor name|Tamura Yukari}}
|releasedon = {{doll_server_alias|server=CN|alias=M4 SOPMOD II|year=2016|month=5}}, {{doll_server_alias|server=TW|alias=M4 SOPMOD II}}, {{doll_server_alias|server=KR|alias=M4 SOPMOD II}}, {{doll_server_alias|server=EN|alias=M4 SOPMOD II}}, {{doll_server_alias|server=JP|alias=M4 SOPMOD II}}
|releasedon = {{doll_server_alias|server=CN|alias=M4 SOPMOD II|year=2016|month=5}}, {{doll_server_alias|server=TW|alias=M4 SOPMOD II}}, {{doll_server_alias|server=KR|alias=M4 SOPMOD II}}, {{doll_server_alias|server=EN|alias=M4 SOPMOD II}}, {{doll_server_alias|server=JP|alias=M4 SOPMOD II}}
|GFL2=Soppo


|weaponinfo =
|weaponinfo =
The name 'M4 SOPMOD II' refers to the combination of two things: the M4 carbine and the SOPMOD II accessory kit set issued to special operations units of the United States Military such as the Delta Force, Navy Seals and Army Rangers.
Special Operations Peculiar Modification (SOPMOD) was a U.S. Special Operations Command (USSOCOM) program managed by Naval Surface Warfare Center (NSWC) - Crane Division to enhance the lethality of the M4A1 Carbine for Special Operations Forces. The first SOPMOD accessory kit, Evolutionary Acquisition Block I Upgrade, was issued in 1997. This package saw numerous changes over the following years with the SOPMOD Operational Requirements Document (ORD) Amendment 5 in 1999 addressing persistent issues identified during a study by the SOPMOD Program Management Office that year. Plans for Evolutionary Acquisition Block II and Block III Upgrades were then created as early as 2001 to further enhance the capabilities of the M4A1 Carbine by 2005. However, only the Crane Reliability Parts Set and Close Quarters Battle Receiver (CQBR) met their schedules by 2003. It wasn’t until the invasions of Afghanistan and Iraq that the capability gaps of the Block I Upgrade became more pronounced and a new SOPMOD sub-program was created with the Miniature Day/Night Sight (MDNS) Capability Development Document in December 2004.<ref name="ndia2001">[https://apps.dtic.mil/sti/tr/pdf/ADA396675.pdf SOPMOD Program Overview Presentation to NDIA, 2001]</ref>


The M4 assault rifle was developed from the earlier M16A2, and chambers the 5.56×45mm NATO cartridge. The M4 an is air-cooled, direct impingement gas-operated, magazine-fed infantry carbine. It has a 14.5 inch (370 mm) barrel and a telescoping stock. The M4 carbine is heavily used by the United States Armed Forces, and has replaced the M16 rifle in most United States Army and United States Marine Corps combat units as the primary infantry weapon.<ref name = "Cinnamon wiki">[[wikipedia:M4 carbine|Wikipedia entry on M4 carbine]]</ref>
The MDNS Development sub-program was meant to update the aging technology of the Block I accessory kit items. This included the upgrade or replacement of passive day, passive night and active aiming solutions with new emerging systems. Many of these items were issued as the Block I Phased Replacements accessory kit (often referred to as Block 1.5) during the final development of the Block II Upgrade. The Block I Phased Replacements items were the SU-237/PVS (Trijicon ACOG TA31 ECOS), SU-231/PEQ (EOTech 553), SU-233/PVS (Insight M3X), SU-238/PVS (Insight M6X), and AN/PVS-17A Product Improvement Kit. The final round of testing for the Block II Upgrade was completed by 2007 with the final production down-selection of the Rail Interface System II (RIS II) program and cancellation of the Backup Iron Sight II (BUIS II) program. NSWC Crane had awarded three contracts for a second generation Rail Interface System to address suboptimal ergonomics when mounting issued accessories on the Knight's Armament M4 Rail Adapter System. Development of the RIS II may have also been influenced by the growing popularity of full-length rails in competition shooting at the time. Daniel Defense was selected for final production of the RIS II.<ref name="ndia2006">[https://ndia.dtic.mil/wp-content/uploads/2006/smallarms/taylor.pdf SOPMOD Program Overview Presentation to NDIA, 2006]</ref><ref name="sopmodhistory2mag">[https://www.swatmag.com/article/history-of-sopmod-part-ii/ History of SOPMOD, Part II]</ref>


U.S. Special Operations Command (US SOCOM) developed the Special Operations Peculiar Modification (SOPMOD) Block I kit for the carbines used by units under its jurisdiction. The kit features an M4A1, a Rail Interface System (RIS) handguard developed by Knight's Armament Company, a shortened quick-detachable M203 grenade launcher and leaf sight, a KAC sound suppressor, a KAC back-up rear sight, an Insight Technologies AN/PEQ-2A visible laser/infrared designator, a Trijicon TA-01NSN ACOG scope and reflex sights, and a night-vision sight. This kit was designed to allow a combat unit to modify their rifles for various missions, and the SOPMOD kit is currently supplied to many special operations units.<ref name = "SOPMOD book reference">AR Platform Firearms & Calibers, 1st Edition by Martin R. Mason, p.113</ref>
The Daniel Defense RIS II FSP (front sight post) version was the first rail adopted under the Block II Upgrade in 2007. It served to retrofit existing M4A1 Block I rifles which utilized the then-standard 14.5” SOCOM-profile barrels with the A2 front sight base. The RIS II non-FSP version was later adopted within USSOCOM in 2012. While the RIS II FSP was fitted to existing rifles, the non-FSP upper receivers were newly assembled at NSWC Crane using 14.5” Government-profile barrels and the low-profile MK12 Mod 1 gas block. These complete uppers were then issued to SOF units to be paired with M4A1 lower receivers. M4A1 Carbines with the SOPMOD Block II accessory kit are referred to as the M4A1 Block II. Additionally, the 10.3” CQBR Block II upper receivers with the MK18 RIS II were issued beginning around 2010. The Block II accessory kit initially used the existing Knight's Armament NT4 suppressor and M4QD flash hider from the Block I accessory kit. NSWC Crane then awarded the Family of Muzzle Brake/Suppressors (FMBS) contract to the Surefire FA556-212 (SOCOM556-RC) suppressor and FH556-215A (FH556RC) flash hider in 2011. The standard M4A1 fire control group was also replaced in some capacity when USSOCOM adopted the Geissele Super Select-Fire Trigger in 2013.


The second-generation SOPMOD kit (known as the SOPMOD II) includes newer innovative optics, such as the Elcan Specter DR, Trijicon's ACOG TA-31 ECOS model, and the Eotech 553. The Block II kit uses the RIS II rails manufactured by Daniel Defense in both 9.5 and 12.5 length.<ref name = "SOPMOD book reference 2>AR Platform Firearms & Calibers, 1st Edition by Martin R. Mason, p.114</ref>
The SU-230/PVS (ELCAN Specter DR 1-4) is attributed as the single most impactful item in the Block II Upgrade. The SU-230 features a variable 1/4x magnification that allowed for effective target spotting and acquisition in both close-quarters and medium-range engagements. Additionally, the issued Docter Miniature Red Dot (MRD) Sight provided the SU-230 an attachable sight for users that preferred a top-mounted CQB aiming solution. While it could extend the effective range of the M4A1 Carbine up to 650 meters under ideal conditions, the main performance contribution of the SU-230 was improved accuracy within 500 meters with the then-issued Mk262 77-grain ammunition. However, some of the initial Block II accessory kit items were not positively received. The SU-233 gun light was unpopular as it only provided 125 lumens at maximum output and used an incandescent bulb when LED weapon lights had already been introduced. It was replaced by the Insight WMX200 light around 2010. Despite using an LED bulb, this new light was also unpopular and the Surefire Scout Light (as well as older Surefire models) saw significant use at the individual and unit level. The later era of the Block II Upgrade was marked by this trend of commercial-off-the-shelf (COTS) sourcing and contracts outside of the SOPMOD program. An example is the replacement of the SU-231/PEQ (EOTech 553) with the SU-231A/PEQ (EOTech EXPS3-0) as the issued Enhanced Combat Optical Sight (ECOS) in 2012. Ultimately, the flexibility of the M4A1 Block II and acquisitions outside of the SOPMOD program meant that the previously envisioned Block III Upgrade was never developed.<ref name="sopmodhistory2mag">[https://www.swatmag.com/article/history-of-sopmod-part-ii/ History of SOPMOD, Part II]</ref><ref name="sopmodhistory2yt">[https://www.youtube.com/watch?v=XH4d-SWyBWg History of SOPMOD BLK II from Modern Tactical Shooting]</ref>
 
The United States Army Special Operations Command (USASOC) eventually adopted the Upper Receiver Group-Improved (URG-I) in 2017. This new upper receiver utilizes a Daniel Defense 14.5” Mid-length Government-profile barrel and Geissele 13.5″ MK16 M-LOK rail; an 11.5” URG-I upper receiver was also adopted. However, the M4A1 Block II and legacy SOPMOD Block II items continue to see use throughout USSOCOM.


|design=
|design=
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"The SF-made left arm was integrated into her body by herself in the story. It is unclear whether there are other models of arm she is compatible with." 铁血的左手应该也是剧中的她自己接的,其他量产型接的谁的手臂真就不好说了。   
"The SF-made left arm was integrated into her body by herself in the story. It is unclear whether there are other models of arm she is compatible with." 铁血的左手应该也是剧中的她自己接的,其他量产型接的谁的手臂真就不好说了。   
She uses her namesake M4A1 SOPMOD Block II with the Daniel Defense M4A1 RIS II Handguard, EOTech SU-231/PEQ Holographic Weapon Sight, Shieldshot Mirror Sight, Insight WMX200 Weapon Light, SOPMOD Gen 1 Stock, TangoDown PR-4 Carbine Sling Mount, and Lancer L5AWM Magazine. This configuration is changed in her neural upgrade to add the Magpul AFG-2 Angled Foregrip, remove the Insight WMX200 and Shieldshot Mirror Sight, and replace the TangoDown PR-4 with the CQD Rear Sling Mount. Additionally, her skins feature alternate configurations, though all of them retain the Daniel Defense M4A1 RIS II (most as the FSP version).


|min_dmg= 18
|min_dmg= 18
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File:M4_SOPMOD_II_D (Censored).png|Full damaged artwork (Censored)
File:M4_SOPMOD_II_D (Censored).png|Full damaged artwork (Censored)
File:M4 SOPMOD II D story.png|Alternate damaged artwork from [[Continuum Turbulence]].
File:M4 SOPMOD II D story.png|Alternate damaged artwork from [[Continuum Turbulence]].
File:1st Anniversary Background (2017).jpg|1st Anniversary Login screen by [[Artist:音符]]
File:Sleepwalking in Rabbit Wonderland Login Wallpaper.png|"Sleepwalking in Rabbit Wonderland" Login wallpaper illustrated by STAR影法师
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:Banquet Sonata Login Wallpaper.png|"Banquet Sonata" Login wallpaper illustrated by 薯子Imoko
Line 126: Line 133:
File:Maiden's Afternoon Prelude Login Wallpaper.jpg|"Maiden's Afternoon Prelude" Login wallpaper illustrated by ???
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
File:Girls Frontline Orchestra 2018 promotion poster.jpg|[[Girls' Frontline Concerts|Girls Frontline Orchestra 2018]] promotion poster, character art illustrated by Duoyuanjun
File:GFL 10th Anniversary.jpg|10th Anniversary Festival.
</gallery>
</gallery>


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|trivia =  
|trivia =  
*M4 SOPMOD II and {{doll name|ST AR-15|AR|4}} are the only two dolls able to equip two accessory-type equipment pieces at the same time.
*M4 SOPMOD II and {{doll name|ST AR-15|AR|4}} are the only two dolls able to equip two accessory-type equipment pieces at the same time.
*Despite her ability to launch grenades in-game, M4 SOPMOD II does not have equip a grenade launcher attached to her rifle in her artwork.
*Despite having the ability to launch grenades in-game, M4 SOPMOD II does not have an attached under-barrel grenade launcher in her artwork.
**This is rectified in the [[Girls' Frontline: Doll's Song|official manga]], where she is shown using a variation of the M203 under-barrel grenade launcher designed for the M4 and M16 rifles.
**This is rectified in the [[Girls' Frontline: Doll's Song|official manga]] where she is shown using an M203 under-barrel grenade launcher mounted to her rifle.
*The handguard used on the M4 SOPMOD II rifle is the Daniel Defense RIS II series of handguards. In its standard configuration (as shown on SOP II's artwork), it would be unable to mount the M203 launcher. The handguard is designed to allow for the bottom section to be removed in order for the grenade launcher to be installed.
*The Daniel Defense RIS II is designed to allow free float mounting of the M203 grenade launcher using hangers inside the rail. However, this requires removal of the lower rail section. M4 SOPMOD II would therefore be unable to mount an M203 as her in-game art depicts the installed lower rail section. This is addressed in the official manga where she is shown with the lower rail section removed and an M203 correctly mounted.
*In her original artwork, M4 SOPMOD II uses the Shieldshot Mirror Sight which functions as a conventional back-up sight when locked into the rear sight position. However, her rifle does not have a front sight which makes this feature useless. Additionally, the sight window on the SU-231/PEQ is too high for the back-up sight position which would make it unusable with this optic anyways. This means only the actual mirror would be usable with this configuration.
*In the [[Girls' Frontline: Doll's Song|official manga adaptation]], the grenades used by SOP II are shown to be more akin to heavy artillery than the conventional fragmentation grenades typically issued with real-world M203s, creating explosions that dwarf warehouses and being capable of severely damaging Agent who was previously shrugging off small arms fire.
*In the [[Girls' Frontline: Doll's Song|official manga adaptation]], the grenades used by SOP II are shown to be more akin to heavy artillery than the conventional fragmentation grenades typically issued with real-world M203s, creating explosions that dwarf warehouses and being capable of severely damaging Agent who was previously shrugging off small arms fire.
*SOP grafting a Sangvis left arm to her body is possibly inspired by the modularity of AR-15 rifles in real life, and is likely a reference to the SOPMOD program which aimed at creating a modular M4 platform that could be outfitted for a variety of combat theatres.
*SOP grafting a Sangvis left arm to her body is possibly inspired by the modularity of AR-15 rifles in real life, and is likely a reference to the SOPMOD program which aimed at creating a modular M4 platform that could be outfitted for a variety of combat theatres.
*Despite having what appears to be a folding rear sight on her original artwork, M4 SOPMOD II lacks a front sight which would make her rear sight useless.
*Scaling off the size of the rifle in her Neural Upgrade artwork, M4 SOPMOD II would have a height of approximately 4'10 or 147 centimeters, making her quite small.
*Scaling off the size of the rifle in her Neural Upgrade artwork, M4 SOPMOD II would have a height of approximately 4'10 or 147 centimeters, making her quite small.
*One of the picture shown by the haunted book appearing as the completion bonus for the Great Library [[Furniture]] set shows SOP-II looking eagerly at a recently captured [[Dinergate]]. This won't end well for the Dinergate.
*One of the picture shown by the haunted book appearing as the completion bonus for the Great Library [[Furniture]] set shows SOP-II looking eagerly at a recently captured [[Dinergate]]. This won't end well for the Dinergate.

Latest revision as of 08:56, 12 June 2026

M4 SOPMOD II Story Quotes Live2D
M4 SOPMOD II
56
Gun Information
Full name M4A1 SOPMOD Block II
Country of origin United States
Manufacturer Colt's Manufacturing/Colt Defense, Daniel Defense, Badger Ordnance, Knight's Armament, EOTech, ELCAN, Insight Technology, L3Harris, Surefire, LMT Defense, and others
Game Information
Faction AR Team, Griffin & Kryuger
Manufactured /
Revised by
16Lab
Voice actor Tamura Yukari
Artist 海猫络合物 (Original Artist);

ZAGALA (Neural Upgrade);
八号地球 (Cocktail Party Exterminator);
STAR影法师 (The Guarded Beloved);
暖森 (Birdsong in the Woods);
Su (Resurrection Repairer Jr);
umo (Racing Parfait)

Released on CN (2016-5), TW, KR, EN, JP
Chibi Animation
Variant:

Click the marked area to switch between animations. For details regarding animations, please see Animations on the Wiki.

View page template

M4 SOPMOD II is a playable character in the game Girls' Frontline.

    For the corresponding character in Girls' Frontline 2, see Soppo.

How to obtain

NORMALHEAVY Not craftable.

DROP Not obtainable as a drop.

REWARD Rewarded to players after clearing chapter 3-3 for the first time. This AR M4 SOPMOD IIM4 SOPMOD IIM4 SOPMOD II will be Lv.30 and at 3x Dummy Links.

Exclusive Equipment

Union Skill

There is no union skill for this T-Doll.

Stats / Data

Stats

Health
Health
 Health
Health
Health
 Ammo
Health
Health
 Ration
55(x1)110(x1) / 550(x5) 20(x1) / 60(x5) 20(x1) / 60(x5)
Damage
Damage
 Damage
18 50
Evasion
Evasion
 Evasion
6 44
Accuracy
Accuracy
 Accuracy
7 49
Rate of Fire
Rate of Fire
 Rate of Fire
54 78
Movement Speed
Movement Speed
 Move Speed
10
Armor
Armor
 Armor
0
Critical Hit Rate
Critical Hit Rate
 Crit. Rate
20%
Critical Hit Damage
Critical Hit Damage
 Crit. Damage
50%
Armor Penetration
Armor Penetration
 Armor Pen.
15

Ranking of this Doll's specs relative to other Dolls of the same type.

Ranking of this Doll's specs relative to every other Doll.

Affects submachine guns
Increases evasion by 12%
Increases accuracy by 50%
How to edit skills

Health
Health
 Health
Health
Health
 Ammo
Health
Health
 Ration
55(x1)112(x1) / 560(x5) 20(x1) / 60(x5) 20(x1) / 60(x5)
Damage
Damage
 Damage
18 51
Evasion
Evasion
 Evasion
6 45
Accuracy
Accuracy
 Accuracy
7 50
Rate of Fire
Rate of Fire
 Rate of Fire
54 78
Movement Speed
Movement Speed
 Move Speed
10
Armor
Armor
 Armor
0
Critical Hit Rate
Critical Hit Rate
 Crit. Rate
30%
Critical Hit Damage
Critical Hit Damage
 Crit. Damage
50%
Armor Penetration
Armor Penetration
 Armor Pen.
15

Ranking of this Doll's specs relative to other Dolls of the same type.

Ranking of this Doll's specs relative to every other Doll.

Affects submachine guns
Increases evasion by 15%
Increases accuracy by 50%
How to edit skills

Health
Health
 Health
Health
Health
 Ammo
Health
Health
 Ration
55(x1)113(x1) / 565(x5) 20(x1) / 60(x5) 20(x1) / 60(x5)
Damage
Damage
 Damage
18 52
Evasion
Evasion
 Evasion
6 46
Accuracy
Accuracy
 Accuracy
7 50
Rate of Fire
Rate of Fire
 Rate of Fire
54 79
Movement Speed
Movement Speed
 Move Speed
10
Armor
Armor
 Armor
0
Critical Hit Rate
Critical Hit Rate
 Crit. Rate
30%
Critical Hit Damage
Critical Hit Damage
 Crit. Damage
50%
Armor Penetration
Armor Penetration
 Armor Pen.
15

Ranking of this Doll's specs relative to other Dolls of the same type.

Ranking of this Doll's specs relative to every other Doll.

Affects submachine guns
Increases evasion by 15%
Increases accuracy by 50%
How to edit skills

Health
Health
 Health
Health
Health
 Ammo
Health
Health
 Ration
55(x1)113(x1) / 565(x5) 20(x1) / 60(x5) 20(x1) / 60(x5)
Damage
Damage
 Damage
18 52
Evasion
Evasion
 Evasion
6 46
Accuracy
Accuracy
 Accuracy
7 51
Rate of Fire
Rate of Fire
 Rate of Fire
54 79
Movement Speed
Movement Speed
 Move Speed
10
Armor
Armor
 Armor
0
Critical Hit Rate
Critical Hit Rate
 Crit. Rate
30%
Critical Hit Damage
Critical Hit Damage
 Crit. Damage
50%
Armor Penetration
Armor Penetration
 Armor Pen.
15

Ranking of this Doll's specs relative to other Dolls of the same type.

Ranking of this Doll's specs relative to every other Doll.

Affects submachine guns
Increases evasion by 15%
Increases accuracy by 50%
How to edit skills

Weapon Background

Special Operations Peculiar Modification (SOPMOD) was a U.S. Special Operations Command (USSOCOM) program managed by Naval Surface Warfare Center (NSWC) - Crane Division to enhance the lethality of the M4A1 Carbine for Special Operations Forces. The first SOPMOD accessory kit, Evolutionary Acquisition Block I Upgrade, was issued in 1997. This package saw numerous changes over the following years with the SOPMOD Operational Requirements Document (ORD) Amendment 5 in 1999 addressing persistent issues identified during a study by the SOPMOD Program Management Office that year. Plans for Evolutionary Acquisition Block II and Block III Upgrades were then created as early as 2001 to further enhance the capabilities of the M4A1 Carbine by 2005. However, only the Crane Reliability Parts Set and Close Quarters Battle Receiver (CQBR) met their schedules by 2003. It wasn’t until the invasions of Afghanistan and Iraq that the capability gaps of the Block I Upgrade became more pronounced and a new SOPMOD sub-program was created with the Miniature Day/Night Sight (MDNS) Capability Development Document in December 2004.[1]

The MDNS Development sub-program was meant to update the aging technology of the Block I accessory kit items. This included the upgrade or replacement of passive day, passive night and active aiming solutions with new emerging systems. Many of these items were issued as the Block I Phased Replacements accessory kit (often referred to as Block 1.5) during the final development of the Block II Upgrade. The Block I Phased Replacements items were the SU-237/PVS (Trijicon ACOG TA31 ECOS), SU-231/PEQ (EOTech 553), SU-233/PVS (Insight M3X), SU-238/PVS (Insight M6X), and AN/PVS-17A Product Improvement Kit. The final round of testing for the Block II Upgrade was completed by 2007 with the final production down-selection of the Rail Interface System II (RIS II) program and cancellation of the Backup Iron Sight II (BUIS II) program. NSWC Crane had awarded three contracts for a second generation Rail Interface System to address suboptimal ergonomics when mounting issued accessories on the Knight's Armament M4 Rail Adapter System. Development of the RIS II may have also been influenced by the growing popularity of full-length rails in competition shooting at the time. Daniel Defense was selected for final production of the RIS II.[2][3]

The Daniel Defense RIS II FSP (front sight post) version was the first rail adopted under the Block II Upgrade in 2007. It served to retrofit existing M4A1 Block I rifles which utilized the then-standard 14.5” SOCOM-profile barrels with the A2 front sight base. The RIS II non-FSP version was later adopted within USSOCOM in 2012. While the RIS II FSP was fitted to existing rifles, the non-FSP upper receivers were newly assembled at NSWC Crane using 14.5” Government-profile barrels and the low-profile MK12 Mod 1 gas block. These complete uppers were then issued to SOF units to be paired with M4A1 lower receivers. M4A1 Carbines with the SOPMOD Block II accessory kit are referred to as the M4A1 Block II. Additionally, the 10.3” CQBR Block II upper receivers with the MK18 RIS II were issued beginning around 2010. The Block II accessory kit initially used the existing Knight's Armament NT4 suppressor and M4QD flash hider from the Block I accessory kit. NSWC Crane then awarded the Family of Muzzle Brake/Suppressors (FMBS) contract to the Surefire FA556-212 (SOCOM556-RC) suppressor and FH556-215A (FH556RC) flash hider in 2011. The standard M4A1 fire control group was also replaced in some capacity when USSOCOM adopted the Geissele Super Select-Fire Trigger in 2013.

The SU-230/PVS (ELCAN Specter DR 1-4) is attributed as the single most impactful item in the Block II Upgrade. The SU-230 features a variable 1/4x magnification that allowed for effective target spotting and acquisition in both close-quarters and medium-range engagements. Additionally, the issued Docter Miniature Red Dot (MRD) Sight provided the SU-230 an attachable sight for users that preferred a top-mounted CQB aiming solution. While it could extend the effective range of the M4A1 Carbine up to 650 meters under ideal conditions, the main performance contribution of the SU-230 was improved accuracy within 500 meters with the then-issued Mk262 77-grain ammunition. However, some of the initial Block II accessory kit items were not positively received. The SU-233 gun light was unpopular as it only provided 125 lumens at maximum output and used an incandescent bulb when LED weapon lights had already been introduced. It was replaced by the Insight WMX200 light around 2010. Despite using an LED bulb, this new light was also unpopular and the Surefire Scout Light (as well as older Surefire models) saw significant use at the individual and unit level. The later era of the Block II Upgrade was marked by this trend of commercial-off-the-shelf (COTS) sourcing and contracts outside of the SOPMOD program. An example is the replacement of the SU-231/PEQ (EOTech 553) with the SU-231A/PEQ (EOTech EXPS3-0) as the issued Enhanced Combat Optical Sight (ECOS) in 2012. Ultimately, the flexibility of the M4A1 Block II and acquisitions outside of the SOPMOD program meant that the previously envisioned Block III Upgrade was never developed.[3][4]

The United States Army Special Operations Command (USASOC) eventually adopted the Upper Receiver Group-Improved (URG-I) in 2017. This new upper receiver utilizes a Daniel Defense 14.5” Mid-length Government-profile barrel and Geissele 13.5″ MK16 M-LOK rail; an 11.5” URG-I upper receiver was also adopted. However, the M4A1 Block II and legacy SOPMOD Block II items continue to see use throughout USSOCOM.

Character Design

SOP II is illustrated by UmiNeko, a contributing artist for Girls' Frontline during its early development. UmiNeko also illustrated 3 other members of AR Team. UmiNeko made comments on the official art book of Girls Frontline regarding the design concept of SOP II[5]:

"In a word: ravager. The whole design concept revolves around 'Modification' and 'Destruction'." (破坏狂。设计围绕着“改造”与“破坏”展开。)

"Even though the original weapon is based on the M4A1, a lot of contrasting designs were used to highlight and represent the concept of 'Modification'." (虽说真实型号是建立在M4A1的基础上的,不过为了突出改在给人的感觉,做了一些比较强烈的对比。)

"The weapon itself undergoes a lot of modifications in real life, and so the doll also received a lot of modifications on the concept design drawing board, such as the bleached white hair and self-attached Sangvis Ferri-made left arm." (由于原型来自过度的改造,那么本体的人形也一样进行了非常多的设计图改造,无论是染白的头发还是对于自主拆卸然后接上铁血的左手。)

"When it came to impression and personality design, she was developed with a young demon in mind, providing a sense of unrealistic impression. Hoping to give viewers a sense of 'Cute' and 'Scary' at the same time." (在形象与性格的设计时,把她想象成了一个年幼的恶魔来设计,能突出一种非原装的不真实感。希望能给看到的人一种可爱和可怕同时存在的印象。)

"The SF-made left arm was integrated into her body by herself in the story. It is unclear whether there are other models of arm she is compatible with." 铁血的左手应该也是剧中的她自己接的,其他量产型接的谁的手臂真就不好说了。

She uses her namesake M4A1 SOPMOD Block II with the Daniel Defense M4A1 RIS II Handguard, EOTech SU-231/PEQ Holographic Weapon Sight, Shieldshot Mirror Sight, Insight WMX200 Weapon Light, SOPMOD Gen 1 Stock, TangoDown PR-4 Carbine Sling Mount, and Lancer L5AWM Magazine. This configuration is changed in her neural upgrade to add the Magpul AFG-2 Angled Foregrip, remove the Insight WMX200 and Shieldshot Mirror Sight, and replace the TangoDown PR-4 with the CQD Rear Sling Mount. Additionally, her skins feature alternate configurations, though all of them retain the Daniel Defense M4A1 RIS II (most as the FSP version).

Main artworks

Primary in-game artworks. For information on how to obtain certain costumes, see Skin Catalogue.

Other artworks

Alternate expressions

Trivia

  • M4 SOPMOD II and AR ST AR-15ST AR-15ST AR-15 are the only two dolls able to equip two accessory-type equipment pieces at the same time.
  • Despite having the ability to launch grenades in-game, M4 SOPMOD II does not have an attached under-barrel grenade launcher in her artwork.
    • This is rectified in the official manga where she is shown using an M203 under-barrel grenade launcher mounted to her rifle.
  • The Daniel Defense RIS II is designed to allow free float mounting of the M203 grenade launcher using hangers inside the rail. However, this requires removal of the lower rail section. M4 SOPMOD II would therefore be unable to mount an M203 as her in-game art depicts the installed lower rail section. This is addressed in the official manga where she is shown with the lower rail section removed and an M203 correctly mounted.
  • In her original artwork, M4 SOPMOD II uses the Shieldshot Mirror Sight which functions as a conventional back-up sight when locked into the rear sight position. However, her rifle does not have a front sight which makes this feature useless. Additionally, the sight window on the SU-231/PEQ is too high for the back-up sight position which would make it unusable with this optic anyways. This means only the actual mirror would be usable with this configuration.
  • In the official manga adaptation, the grenades used by SOP II are shown to be more akin to heavy artillery than the conventional fragmentation grenades typically issued with real-world M203s, creating explosions that dwarf warehouses and being capable of severely damaging Agent who was previously shrugging off small arms fire.
  • SOP grafting a Sangvis left arm to her body is possibly inspired by the modularity of AR-15 rifles in real life, and is likely a reference to the SOPMOD program which aimed at creating a modular M4 platform that could be outfitted for a variety of combat theatres.
  • Scaling off the size of the rifle in her Neural Upgrade artwork, M4 SOPMOD II would have a height of approximately 4'10 or 147 centimeters, making her quite small.
  • One of the picture shown by the haunted book appearing as the completion bonus for the Great Library Furniture set shows SOP-II looking eagerly at a recently captured Dinergate. This won't end well for the Dinergate.
  • SOP-II made her own M4 SOPMOD II Jr. in the gag anime, who made it into the game with her 2022 April Fools costume.

References