Fire Force (2019). The Japanese title of the show is 炎炎ノ消防隊, which means Blazing Firefighting Corps in English.
The following weapons were used in Season 1 of the anime series Fire Force:
Pistols
Daewoo K5
What seems to be the Daewoo K5 is seen in a flashback sequence in "Formation of Special Fire Force Company 8 - The Mightiest Hikeshi".
The pistol being used in the first half of "Formation of Special Fire Force Company 8 - The Mightiest Hikeshi".
Glock pistol
A Glock full-size pistol is used to illustrate Takehisa's 2nd gen Fire Soldier powers.
The Glock full-size pistol's X-ray in "The Battle Begins".
M1911A1
A M1911A1 is used by Special Fire Force Company 8 Company Commander Takehisa Hinawa as his sidearm. It gets mistaken in dialogue in flashback sequences in "Formation of Special Fire Force Company 8 - The Mightiest Hikeshi" as the HK USP when Takehisa mentions that it belonged to a Tokyo Army officer named Tojo.
Takehisa aims the pistol in "The Hero and the Princess" during an anti-Infernal op.
The said M1911A1 in "Formation of Special Fire Force Company 8 - The Mightiest Hikeshi".
The pistol given to Takehisa after he gets discharged from TA service.
A fake Asakusa local turned Infernal is shot by Takehisa in the middle of "The Trap is Set".
A very good shot of the dropped M1911A1 in "Wearing his Pride".
SIG-Sauer P226
A SIG-Sauer P226 is seen with Vulcan in "Those Connected" when Dr. Giovanni goads him to shoot Akitaru Obi.
Factory black (K-Kote) SIG-Sauer P226 pistol - 9x19mm.
Vulcan takes the loaded P226 in "Those Connected".
Submachine Guns
Minebea PM-9
The Minebea PM-9 is seen with Takehisa as his primary weapon. It's first seen in the OP sequence "Inferno"/ED sequence "veil". It's first seen operationally with Takehisa in "Shinra Kusakabe Enlists".
Official anime lineart of Takehisa posing with the PM-9.
In "Shinra Kusakabe Enlists", Takehisa secures his PM-9.
The PM-9 being given a bolt slap during an anti-Infernal operation.
Takehisa fires dual PM-9s at Fire Force Company 5 firefighters in "The Battle Begins".
A good shot of Takeshisa's PM-9.
Tokyo Army SMG
A SMG used by the TA appears to visually resemble something from the MP5SD series in terms of the foregrip.
TA soldiers take out Tojo after he turns into an Infernal in "Formation of Special Fire Force Company 8 - The Mightiest Hikeshi".
Rifles
Hybrid rifle
Hinawa is seen to be using a hybrid rifle that's based on a Double rifle with some parts taken from the Tanegashima when he goes with Company 8 to infiltrate the Tokyo Metro subway platform.
Westley-Richards "Droplock" Double Rifle - .375 H&H Magnum
Long barreled tanegashima
A row of several detachable gun barrels Hinawa brought with him in "Wearing His Pride".
The rifle secured by Hinawa. From the looks of it, it's influenced seemingly by the Tanegashima.
Hinawa lowering the shotgun after the removable barrel gets busted from firing powered 7.62 NATO rounds.
Ithaca 37
What seems to be an Ithaca 37 is used by Hinawa as his main shotgun of choice.
Ithaca 37 with extended magazine tube and pistol grip - 12 gauge
Hinawa with the pistol-gripped shotgun in "Wearing His Pride". Note the design of the pump and the (at least) lack of an ejection port on the receiver.
Hinawa taking cover from fighting with Arrow inside the deserted Tokyo Metro subway platform. Note that it's an extended barrel version.
Sniper Rifles
Remington M24
What seems to be a M24 Sniper Weapon System is used by Takehisa as his main sniper rifle.
M24 sniper rifle - 7.62x51mm NATO
Takehisa snipes at Company 5 firefighters during a raid in "The Battle Begins".
Grenades
Extinguisher Grenades
The Extinguisher grenades are first seen in the Special Fire Force Company 8 Arsenal in "The Heart of a Fire Soldier". They're used to quickly subdues flames during anti-Infernal ops, but they were used in "Eve of Hostilities in Asakusa" to extinguish Commander Shinmon (Waka) Benimaru's flames.
A sphere-type grenade is seen with Obi when Company 8 infiltrates the abandoned Tokyo Metro subway system in "Those Connected".
The grenades inside the armory in "The Heart of a Fire Soldier". The Japanese subtitles mention them on screen as "消火グレネード".
Captain Obi shows off the primed EG in "Eve of Hostilities in Asakusa". Its body appears to be influenced by the
M84 stun grenade.
A dropped EG during the fight between Captain Obi and Commander Benimaru.
The sphere-type EG used by Obi in "Those Connected".
Others
Special Fire Force Company 8 Arsenal
Several assault rifles are behind Takehisa in "The Heart of a Fire Soldier".