Girls' Frontline: HK21

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少女前线 logo.png
For sister G3, any risk would be worth it......
Girls' Frontline: HK21
Pic HK21.png
Basic info
Original name HK21 machine gun
| Sister-con, Glasses, Double ponytails
Hair color Flaxen
Eye color Pink
Type MG
Rarity ★★★★★
Place of origin Germany
Developed by Heckler & Koch
Manufactured by Heckler & Koch
Developed 1961
In service 1961-

HK21 is a character from the Tactical SRPG ES game Girls' Frontline developed by MicaTeam and published by Digital Sky and its derivatives. She joined the struggle on February 8, 2018.

Historical basis

The HK21 General-Purpose Machine Gun (GPMG) is one model of a series of machine guns based on the G3. Its first improved model is the HK21A1, with various improved models appearing as time progressed, an example of which is the HK11, an impmroved HK21 with a 20-round magazine. It is designated as the Gewehr-8 (G-8) by the German Army, German Navy and the Bundespolizei. It also shares 48% of its parts with the G3.


The HK21 GPMG is belt-fed, but can also accept rifle magazines by attaching an adaptor should the need arise. It can be used as a light machinegun if fitted with a bipod, which can be mounted in front of the feeding mechanism or to the front of the barrel shroud. It can also be utilized as a heavy-machinegun with a tripod. Its design enabled quick caliber change by swapping the barrel, the bolt and the feeding mechanism to accept 5.56x45mm NATO ammunition.


The bolt of the HK21 cycles back and forth above the belt, mandating that the belt is to be placed with the link facing downards, pulling the charging handle to the rear, turning it to lock it in place, before placing the belt and allowing the charging handle to return, chambering a round. The HK21 GMPG uses standard iron sights, but is also compatible with anti-aircraft, telescopic or nightvision sights.


  • Empty weight: 7.92kg
  • Length: 1,021 mm
  • Barrel length: 450 mm
  • Rate of fire: 900 RPM
  • Muzzle velocity: 910 m/s
Specifications found in-game
  • The following data may contain errors and represent only the game's view towards the firearm. For reference only.


Index number: No.204 Rarity:★★★★★
Nationality:GermanFlag of Germany.svg Type: Machine Gun
CV: Illustrator: 小吃
Stats(Growth: S)
Health (B) 85 →169 Damage (A) 32 →92
Dodge (S) 4 →33 Accuracy (A) 4 →29
Movement speed 4 → 4 Rate of Fire (S) 90 →135
Crit chance 5%→?% Ammo count 10 → 10
Operational effectiveness
239 →?
Resource demands
Ammo 40 → ? Rations 30 → ?
Ability Description
Blind Obliteration (无差别崩坏) Raises ammo count by 1 (2), firepower by 10% (40%), and accuracy by 15% (30%),
entering spray-mode, switching targets with every attack, sacrificing movement speed by 50% for 6 (8) seconds.
Has an initial cooldown of 8 seconds with an interval of 18 seconds.
Effect tiles

Keypads 3,6

Effect Applies to SGs
Damage +15%, Armor +15%
Acquired by
Production N/A
Drops N/A
Others Finishing Girls' Frontline: Winter event 2018 "Singularity [The Second Moon-Squad "Rebellion" path (第二轮月亮-忤逆小队路线)]
Pic HK21.png
Pic HK21 D.png


  • The buff effect of handguns will be improved when they undergo establishment augmentations.
  • Data in the Stats section correspond to the threshold at level 1 / at level 100 / after MOD 1 digi-mind update / after MOD 2 digi-mind update / after MOD 3 digi-mind update (if available).
  • Data in parentheses ("()") is the maximum possible value of the stat.
Chibi version animation

Pic HK21 Q.gif



HK21 (in Chinese)

Pic HK21 setting.jpg


Attack behaviour

Deliberate tests regarding the fact that the "spray mode" of the ability is a direct contrary to Contender's fire concentration were made, and found out that HK21 will place her own behaviour higher on the list, which basically means that even when Contender orders "Concentrate your fire!", some kids still disobey.


CV not implemented
Case Line Audio
Login screen ショウジョゼンセン。
Girls' Frontline
Upon login
Phew......Sis, I've finally come here...... Commander, though troublesome, but please, take care of me from now on.
As adjutant
Having a combat meeting with everyone? ......Let it go, I won't be of much use there, no need to include me.

Commander, please don't bother sis if there's something complex, leave it to me.

My hair's freshly dyed......Don't mess with it.
As adjutant (post-oath link establishment)
Dormitory (liftoff)
Dormitory (touch)


Echelon formation
Beginning mission
Beginning battle
Winning battle as MVP
Beginning autobattle
Beginning logistic support
Finishing logistic support
Finishing production
Establishment augmentation
Ability activation

Oath-link establishment

External links and references


  1. Weibo:@小吃_寒冰画将
  2. 2.0 2.1 2.2 2.3 Characters labeled "EXTRA" are the results of various collaboration efforts and are not directly based on actual firearms.