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Suomi Story Quotes Live2D
Gun Information
Full name Suomi-KonePistooli 1931
Country of origin Finland
Manufacturer Tikkakoski
Game Information
Faction Griffin & Kryuger
Manufactured /
Revised by
Voice actor Toyosaki Aki
Artist Anmi
Released on CN (索米), TW (索米), KR (수오미), EN, JP (スオミ)
Chibi Animation

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

How to obtain[edit]

NORMALHEAVY Timer 2:25:00. See T-Doll Production for details.

DROP Not obtainable as a drop.

REWARD Not obtained as a reward

Exclusive Equipment[edit]

Stats / Data[edit]

110(x1)220(x1) / 1100(x5) 25(x1) / 85(x5) 20(x1) / 60(x5)
11 28
8 56
2 15
Rate of Fire
 Rate of Fire
65 93
Movement Speed
 Move Speed
Critical Hit Rate
 Crit. Rate
Critical Hit Damage
 Crit. Damage
Armor Penetration
 Armor Pen.
Icon slot Accessory.png Icon Telescopic Sight S 2star.png Icon Holographic Sight S 2star.png
Icon Red Dot Sight S 2star.png Icon Night Combat Equipment S 2star.png
Icon Silencer S 2star.png
Icon slot Magazine.png Icon Armor-Piercing Ammo S 2star.png Icon HP Ammo S 2star.png
Icon Shotgun Ammo S 2star.png
Icon High-Velocity Ammo S 2star.png
Icon slot Doll.png Icon Microchip S 2star.png Icon Exoskeleton S 2star.png
Icon Ballistic Plate S 2star.png Icon Camo Cape S 2star.png
Icon Ammo Box S 2star.png

Affects assault rifles
Increases rate of fire by 15%
Increases accuracy by 30%

Weapon Background[edit]

The Suomi KP/-31 ('Suomi-konepistooli', or "Finland Machine-pistol") is a Finnish-designed submachine gun used by the forces of Finland primarily during the Second World War. The Suomi KP/-31 is regarded by many as as one of the most successful submachine gun designs of World War II. The effective use of the Suomi KP/-31 by the Finnish military against the Red Army during the Winter War would lead Soviet designers to begin designing their own submachine guns.[1]

The weapon that would become the KP/-31 was designed by Aimo Lahti and Lieutenant Y. Koskinen, and was developed from an earlier design, the KP/-26. A number of changes were made to that earlier gun, with the most notable modifications being the switch from 7.63mm Mauser to 9mm Parabellum and a new type of magazine. This new magazine, a 71-round drum magazine, would later be copied by the Soviets for use in the PPSh-41 submachine gun. In order to produce enough Suomi submachine guns for the Finnish military, Lahti's company would partner with Tikkakoski, an industrial iron and lumber company based in Finland. The production of the Suomi would mark Tikkakoski's entry into the firearms production industry.[2]

The Suomi operates on a simple blow-back mechanism, and is capable of firing up to a rate of 900 rounds per minute. One of the most innovative features on the KP/-31 is the "open-jaw" magazine well, which allowed for the use of a Swedish-pattern double staggered-row magazine (often called a 'coffin magazine'), as well as the conventional 20 round box magazines. However, the Finnish Army-issue Suomi is most often found with the 71-round large-capacity drum magazine. Externally, the Suomi appears similar to many other submachine guns of the time, with its single-piece wooden body, semi-pistol grip stock, and tubular metal receiver. Something that was unusual for a submachine gun at that time was that the Suomi had a quick-change barrel. Given the weapon's rapid rate-of-fire, barrels would often get hot during sustained fire. This quick-detach barrel system allowed a Finnish soldier to swap out an overheated barrel for a fresh one should the need arise.

The Finnish Defense Forces were equipped with only 4000 Suomi KP/-31 submachine guns when the Winter War started in late 1939. This was due to the cost of the Suomi. The KP/-31 was produced to a higher quality standard than most other weapons of World War 2. This, in the long run, proved to be one of the few limitations of the weapon - it was simply too expensive and time-consuming to produce in the large numbers required of war time. The design arrangement also made the Suomi KP/-31 rather heavy for a submachine gun, but this in no way detracted from its battlefield usefulness for the weapon proved to be very accurate in the role - especially at close quarters. The KP/-31 was issued to Finnish infantry squads, who made exceptional use of them in guerilla attacks on Soviet Army forces. The Finns proved experts in their knowledge of the home country and utilized the environment to their advantage, in a few instances even laying waste to entire Red Army elements. Captured Soviet weapons were reused whenever possible, and the Finns ultimately dealt blows to both the notion of Soviet invincibility and Russian national pride, embarrassing the Red Army on the world stage. Despite their larger numbers, the Red Army was handicapped by logistical and equipment problems, as well as Stalin's "Great Purge", which removed many capable leaders from their posts prior to the invasion, effectively watering down his immense fighting force. The Finns did go on to lose territory in the war, but did force an interim peace and maintained their sovereignty. The Soviets lost nearly 127,000 men (including 188,600 wounded), as well as 5,500 tanks and over 400 aircraft in the foray. Finnish losses during the Winter War numbered some 26,000 soldiers.[3]

The Suomi would continue to serve after the conclusion of World War 2, and remained in active service with the Finnish military well into the 1980's. Production of the Suomi would be licensed to several other countries, including Sweden, Denmark, and Switzerland.


The first character Anmi contributed to Girls Frontline, Suomi features the typical Nordic blonde hair with blue eyes. The cloak she wears is in reference to the Finnish army uniform worn during the Winter War. Anmi commented that her knee high socks were originally meant to be black, but under the advice of another artist, Phantania-san, they were changed to white.[Source needed]


Main artwork

Gallery consisting of artworks used primarily in-game.

Alternative artwork

Alternate gallery consisting of artworks with slight alterations as well as miscellaneous artworks.


  • During Continuation War, Finnish soldier once modified the Kp/-31 by attaching the underbarrel flamethrower which known as flamethrower m/44, designed by Sgt. M. Kuusinen on spring 1944. However, the effective range of the M/44 flamethrower is only 12-15 meters, making it less effective than regular flamethrower. Instead of the positive review regarding underslung flamethrower, the device has suffered major problems: The igniting system was ineffective and couldn't work properly in windy condition, as they used feather-like rope for igniter and manually igniting it. The Device itself was used during attack of Kagrakangas at August 16th, 1944 by the Engineer Battalion 35. While the device itself was scrapped or destroyed post-WWII, some of them was still used by Finnish Border Guards until 1970.[5][6]
    • Some of improvement of Device M/44 was include a switch that automatically extinguish flame if the operator was badly injured or killed, thus minimising the risk of exploding fuel tank.
  • To celebrate Suomi receiving a voice actress, Anmi drew a special image of Suomi holding a microphone. This is likely to represent Suomi's personal interest in music and/or the CV's fame in her music making career (see "Gallery" above). Suomi's voice actress, Toyosaki Aki, is well known for her performance as the CV of Hirasawa Yui of K-On!. In addition to her work on music anime, Toyosaki has also had several original songs released as singles and albums.
  • A Suomi KP/-31 was used as a backup weapon by famous Finnish sniper Simo Häyhä during the Winter War.
  • When firing, Suomi's chibi sprite is shown gripping the magazine like a foregrip. This isn't realistically possible, since Suomi uses 71-round drums in her weapon (as shown in her default art).