Darwin's Game (ダーウィンズゲーム) is a 2020 anime series produced by Nexus, based on FLIPFLOPs's 2012 manga series of the same name. It follows Kaname Sudo, a 17-year-old high school student, after he accepts a friend's invitation to download a mobile game called Darwin's Game, before realizing that the game gives players unique abilities (known as Sigils) and then offers them rewards to kill each other.
The following weapons were used in the anime series Darwin's Game:
Shuka Karino is briefly seen handling a Norinco Type 54, presumably taken from a slain opponent, in "First Game". Several more are seen in the hands of various players in "Ignition" and "Fireworks", and in those of Eighth Clan members in "Hardness", "Eighth" (which is, in spite of the name, the seventh episode), "Old One", and "Sunset Ravens".
The player dressed as Banda uses a Nambu Model 60 he stole from a police officer against Kaname Sudo in "First Game". Another is used by an ill-fated policeman in "Old One".
The in-game gacha system's icon for a firearm is a Colt M1911A1; as seen below, this does not necessarily correspond to the weapon actually acquired.
Error creating thumbnail: File missingColt M1911A1 - .45 ACPError creating thumbnail: File missingKaname discovers a fair amount of success with his first use of the gacha store, though one can't help but wonder what sort of weapon would come from a 3-star roll. The M1911 in this icon has a few details (like slide serrations and grip screws), though it lacks some more important bits (like a safety, slide release, or magazine release), and appears to have been drawn with a swinging trigger like a Para-Ordnance LDA.
Beretta 92FS
The actual firearm that Kaname Sudo is given in "First Game" is a Beretta 92FS; he later uses it (or rather, several others attained via his Sigil ability) against Shuka; he creates and uses more of them during "Ignition" and "Fireworks", primarily using them to shoot out security cameras, and yet another in his battle with Danjo in "Heads Up".
Two Gyro Heads (and a third player of unspecified affiliation) are seen with Ingram MAC-10s in "Ignition"; several Eighth Clan members also use them in "Hardness", "Old One", and "Sunset Ravens", and Rein uses one briefly in "Heads Up". Their size is depicted rather inconsistently, ranging from being more or less accurate to the size of a small assault rifle between shots.
Kaname uses a total of 3 Sa vz. 61 Skorpions against Danjo in "Heads Up", though he ultimately only fires one; Rein mentions the weapon by name, with Ryuuji claiming that its presence was the result of a trip to an illegal arms dealer. Notably, he fires far more rounds out of it than the magazine could reasonably fit; this could be handwaved by his Sigil ability, however.
Rein Kashiwagi's main weapon is a Remington 700PSS. She carries it around in a large case on her back, first drawing and firing it in "Fireworks". Another Remington is wielded by an unnamed sniper in "Aquarium", though it is ultimately never fired.
Ryuuji Maesaka's primary weapon is an RPD, with both Maesaka and his gun initially appearing in "Ignition". Sudo uses his Sigil to create two others during "Fireworks", using them against Ichirou Hiiragi (with more being used during "Aquarium" and "Heads Up"); he also notably uses his Sigil to create overpressure ammunition for the weapon, to aid in dealing with Hiiragi's armor.
Both Rein and Sudo use M67 Hand Grenades throughout "Fireworks" (hence the episode's name); like the M84s, they're a purchasable item in the in-game shop, and are depicted as being somewhat underpowered (releasing no apparent shrapnel), though they're also somewhat oddly painted black. Several more are used by the Eighth Clan, starting in "Hardness", yet more are used by Hiiragi in "Eighth", and another is thrown by Sudo in "Heads Up".
Rein and Sudo use M84 Stun Grenades in "Ignition" and "Fireworks" (the latter also using one in "Heads Up"), while Shuka uses one in "Eighth"; they're apparently a rather popular buyable item in the in-game shop. They're depicted more as simple light-producing devices than as actual stun grenades; in one noteworthy scene, Kaname sets one off in his hand, somehow not mangling or burning it in the process.
Sudo uses several RGD-33 Stick Grenades in "Heads Up" while fighting Danjo, presumably acquired (or rather, encountered, since all the grenades he uses are summoned via his Sigil) from the illegal arms dealer that Maesaka put him in touch with.
During his explanation of his reasons for joining Darwin's Game in "Fragile", Danjou is seen facing standing in front of a presently-unidentified tank.
