A Russian shotgun built using 23mm aircraft gun barrels. This makes it the largest-bore shotgun in use, but it only fits 3 rounds in the tube. High damage, slow firerate, extremely tight spread.
–In-game description
KS23M angled
Weapon Type Primary Weapon
Weapon Class Shotgun
Rank Prerequisites Rank 56
Damage 37 → 21
Range 60 max → 110 min


Hip Accuracy


Sight Accuracy


Magazine Size 3, 4 with round in chamber
Ammo Reserve 50
Fire Modes Semi
Rate of Fire 65 RPM

TTK (Time to Kill) 1.84 s
Head & Body Multiplier
per bullet/pellet
Max (60 studs) Min (110 studs)
(x1.14) Head 42.18 23.94
(x1.00) Torso 37 21
(x1) Arms and Legs 37 21
Red color signifies a fatal hit.
Suppressed Stats
Suppressor/Bullet Attachment Suppressed Damage Suppressed Range
ARS Suppressor 37 -> 18.9 60 max -> 110 min
R2 Suppressor 35.15 -> 19.95 57 max -> 104.5 min
PBS-1 Suppressor 35.15 -> 19.95 57 max -> 104.5 min
PBS-4 Suppressor 35.15 -> 19.95 57 max -> 104.5 min
Suppressor 33.3 -> 21 54 max -> 110 min
Flechette 33.3 -> 21 66 max -> 110 min
Birdshot 33.3 -> 21 66 max -> 110 min
Slugs 111 -> 52.5 60 max -> 110 min
Muzzle Velocity 1500 studs/s
Penetration Depth 0.5 studs
Suppression 2.5


Hipfire Camera Recovery Speed 8
Sight Camera Recovery Speed 9
Weapon Recovery Speed 10
Weapon Recoil Damping 1


Min Camera Kick (4.00, -1.61, -0.31)
Max Camera Kick (5.19, -1.11, 0.30)
Min Recoil Displacement (0.10, 0.40, 12.19)
Max Recoil Displacement (0.40, 1.00, 13.80)
Min Recoil Rotation (6.19, -1.00, -0.31)
Max Recoil Rotation (7.09, 0.20, 0.30)
Hipfire Spread Factor 0.07
Hipfire Recovery Speed 8
Hipfire Spread Damping 0.80


Min Camera Kick (3.29, -0.50, -0.50)
Max Camera Kick (4.69, -0.90, 0.50)
Min Recoil Displacement (-0.11, 0.30, 7.19)
Weapon Shot Displacement (0.10, 0.60, 7.80)
Min Recoil Rotation (2.20, -0.50, -0.81)
Max Recoil Rotation (3.40, -0.21, -0.50)
Sight Magnification 2.5x


Reload Time 1.4 seconds
Empty Reload Time 1.4 seconds
Equip Speed 12
Aiming Speed 15
Crosshair Size 16
Crosshair Spread Rate 800
Crosshair Recover Rate 10


Weapon Walk Speed 14 stud/s
Aiming Walk Speed 8.4 stud/s
Ammo Type 23x75mmR
Round in Chamber One
Shot Suppression Range None

List of Attachments

Optics Kills Required
Z-Point 10 Kills
H&K Sight 20 Kills
EOTech XPS2 45 Kills
Delta Sight 70 Kills
MARS 70 Kills
EOTech 552 85 Kills
Mini Sight 110 Kills
C79 125 Kills
Comp Aimpoint 130 Kills
PK-A 165 Kills
M145 185 Kills
PKA-S 225 Kills
PSO-1 Scope 240 Kills
Reflex Sight 285 Kills
Kobra Sight 320 Kills
Super Slim Sight 350 Kills
Coyote Sight 380 Kills
ACOG Scope 430 Kills
VCOG 6x Scope 455 Kills
Pilad 3 500 Kills
TA33 ACOG 650 Kills
Barska Electro 750 Kills
OKP-7 900 Kills
DDHB Reflex 1200 Kills
TA11 ACOG 1750 Kills
PSO-1M2 Scope 2250 Kills
TA01 ACOG 2500 Kills
Animu Sight 4500 Kills
Furro Sight 5000 Kills

Underbarrel Kills Required
Angled Grip 115 Kills
Vertical Grip 45 Kills
Folding Grip 265 Kills
Stubby Grip 355 Kills
Laser 75 Kills

Barrel Kills Required
ARS Suppressor 150 Kills
Compensator 120 Kills
Muzzle Brake 175 Kills
R2 Suppressor 40 Kills
Flash Hider 100 Kills
PBS-4 Suppressor 245 Kills
PBS-1 Suppressor 205 Kills
Suppressor 30 Kills

Other Attachments Kills Required
Green Laser 110 Kills
Canted Delta Sight 405 Kills
Laser 20 Kills
Canted Iron Sight 310 Kills
Ballistics Tracker 1500 Kills
Birdshot 1000 Kills
Fletchette 700 Kills
Slugs 2000 Kills

The KS-23M is a Russian Shotgun. It is unlocked at rank 56, or it can be purchased with credits.


The KS-23 is a Russian shotgun originally designed for controlling prison riots. Operators of this shotgun would be equipped with a variety of ammunition, most of which are not included in the game. Officially, the KS-23 is considered a carbine by the Russian military due to its rifled barrel, which is an uncommon feature for shotguns. The barrel of the shotgun is manufactured from 23mm anti-aircraft cannons that were considered flawed but still usable for the KS-23. As a result, the KS-23 fires what are roughly 6.27 gauge shells, which are the largest shells ever created for a shotgun.

Three more variants of the original KS-23 eventually came after this, the KS-23M, KS-23K and the TOZ-123. The KS-23M features a detachable wire stock and a shorter barrel (which is the version found in-game), the KS-23K is a bullpup version that is fed from a seven-round detachable magazine, and the TOZ-123 is a civilian version that features a smoothbore barrel instead of a rifled one.


General Information

The KS-23M has the highest damage out of any shotgun, along with a longer effective range compared to the other guns in its category. However, its magazine size is smaller than all other shotguns except the Stevens DB, Serbu Shotgun, Sawed Off and the Saiga-12U, at three rounds plus one in the chamber. The rate of fire (RoF) is also the slowest in its class, along with the same time to reload one shell, as with other shotguns with a tube magazine.

Along with its high damage and relatively long effective range, the main advantage of the KS-23M is its tight spread, which further amplifies its effectiveness at mid-range, even without using ammunition attachments like shotgun slugs.

Usage & Tactics

The main weakness of the KS-23M is the low RoF and magazine size; this lets it down in close-quarters-combat (CQC), as the penalty for missing a shot is more substantial compared to other shotguns like the Remington 870. As a result, the KS-23M is much more dependent on accuracy than any other shotgun, heavily relying on hitting the first shot with precision. Hipfiring outside of close range is not recommended, as it is still less reliable than aiming down sights (ADS), which when combined with the gun's tight spread, is one of its key strengths.

With slugs, the KS-23M performs somewhat similarly to itself when equipped with buckshot, however, it does garner a few extra benefits; a one-shot kill (1SK) anywhere out to 52 studs, a 1SK to the torso up to almost its maximum range, and a 1SK to the head at any range, just like the R870's slugs. The main benefit of this attachment is that it can now compete with longer-range weapons such as battle rifles and designated marksman rifles better than it normally could with buckshot. However, this means accuracy becomes paramount, as the user's room for error is much smaller. This can easily result in death when facing CQC-oriented weapons like personal defense weapons, which have a relatively low time to kill (TTK), not giving the user much of a chance to recover from missed shots successfully. Combined with the low RoF, the KS-23M becomes less potent in CQC with slugs, with even more emphasis on first shot precision than normal.


In totality, the KS-23M is a very powerful shotgun but is balanced out by its RoF and minuscule magazine size. It is best applied at mid-range, where it will devastate enemies with its tight spread and high damage, but can also be used effectively at close range with its very high damage if the user can aim well, rewarding those well who can consistently land accurate shots.

Damage Table for Ammunition Attachments

Hitbox for Flechette Range
Max (72 studs) Min (110 studs)
(x1.14) (x8 pellets) Head 37.96 (303.696) 23.94 (191.52)
(x1.00) (x8 pellets) Torso 33.3 (266.4) 21 (168)
(x1.00) (x8 pellets) Arms and Legs 33.3 (266.4) 21 (168)
Note: Yellow color signifies when ALL pellets hit the target.
Hitbox for Birdshot Range
Max (72 studs) Min (110 studs)
(x1.14) (x16 pellets) Head 37.96 (607.392) 21.55 (344.736)
(x1.00) (x16 pellets) Torso 33.3 (532.8) 18.9 (302.4)
(x1.00) (x16 pellets) Arms and Legs 33.3 (532.8) 18.9 (302.4)
Note: Yellow color signifies when ALL pellets hit the target.
Hitbox for Rubber Pellets Range
Max (54 studs) Min (77 studs)
(x1.14) (x5 pellets) Head 54.83 (274.17) 21.55 (107.73)
(x1.00) (x5 pellets) Torso 48.1 (240.5) 18.9 (94.5)
(x1.00) (x5 pellets) Arms and Legs 48.1 (240.5) 18.9 (94.5)
Note: Yellow color signifies when ALL pellets hit the target.
Hitbox for Slugs Range
Max (60 studs) Min (110 studs)
(x2.29) (x1 pellet) Head 254.19 120.23
(x1.20) (x1 pellet) Torso 133.2 63
(x1.00) (x1 pellet) Arms and Legs 111 52.5
Note: Red color signifies a fatal hit.

Pros & Cons


  • Very high damage. 
  • Tight pellet spread.
  • Consistent 1SK out to ~85 studs, and consistent 2SK out to ~120 studs.
  • Effective range of ~135 studs; very good for a shotgun.
  • Clear iron sights.
  • 1SK with slugs to the head at any range, along with a 1SK to any body part at closer ranges.


  • Slow RoF.
  • Very small magazine size.
  • Gun cannot fire immediately after the pump animation, only after the recoil settles, making its effective RoF less than its listed firerate.


  • Due to being rifled, the KS-23M is actually classified as a carbine in the Russian military. This is shown by the designation KS, which stands for Karabin Spetsialniy, or "special carbine."
    • There were never any flechette or birdshot rounds designed for the KS-23 series.
    • Ironically, this is the only shotgun with a rifled barrel, but it has the best pellet spread and pellet density in class. It could mean that this is just a TOZ-123 kitted to look like a genuine KS-23M.
    • Even though it has a large bore, the standard buckshot ammunition is a rather low power load, which is deemed effective at around 30m with a rifled barrel. However, the special slug shot is effective up to 100m and beyond.
  • Due to firing a 23 mm round, 23×75mmR, which equates to roughly 6.27 gauge in terms of American and British shotgun standards, the KS-23M fires the largest shotgun caliber in the game.
    • It is also one of the only shotguns (including the Judge) to not use a 12-gauge.
  • Excluding the suppressors, some barrel attachments visually sit inside the barrel of the KS-23M's in-game model.
  • In patch 4.0.0 (Winter Update 1), the RoF was decreased even more than before the patch but was later reverted.
  • The KS-23M, when equipped with birdshot, was the only weapon capable of killing a full-health Patient Zero Reaper in one shot in the Infection gamemode, dealing over 600 damage against the Patient Zero’s health pool of 500. This is assuming all pellets connect.
  • The sound emitted when pumping the KS-23M is the same sound when pumping the SPAS-12 in Black Mesa.
  • The KS-23M in-game has a bug when using Flechette rounds. Where multiple projectiles, even at close range, may hit a target, but not register the full damage.
    • The SPAS 12 is the only other shotgun to have the same issue. Likely caused by the fact that both shotguns have extremely tight spread patterns to where the projectiles can occasionally overlap with each-other. Preventing them from dealing their full damage.
Primary Weapons

Assault Rifles

AK12 - AN-94 - AS VAL - SCAR-L - AUG A1 - M16A4 - G36
M16A3 - AUG A2 - FAMAS F1 - AK47 - AUG A3 - L85A2
HK416 - AK74 - AKM - AK103 - TAR-21 - M231 - G11K2

Personal Defense Weapons

MP5K - UMP45 - G36C - MP7 - MAC10 - P90 - MP5
Colt SMG 633 - L2A3 - MP5SD - MP10 - MP5/10 - Uzi - M3A1
AUG A3 Para - PPSh-41 - FAL Para Shorty - Kriss Vector
MP40 - X95 SMG - Tommy Gun

Light Machine Guns

Colt LMG - M60 - AUG HBAR - MG36 - RPK12 - L86 LSW - RPK

Sniper Rifles

Intervention - Remington 700 - Dragunov SVU - AWS - BFG 50
AWM - TRG-42 - Mosin Nagant - Dragunov SVDS - Hecate II
M107 - Steyr Scout - WA2000


M4A1 - G36K - M4 - L22 - SCAR PDW - AKU12 - Groza-1
AK12C - Honey Badger - SR-3M - Groza-4 - MC51SD
FAL 50.63 Para - 1858 Carbine - AK105 - Jury - KAC SRR
X95R - HK51B

Designated Marksman Rifles

MK11 - SKS - SL-8 - VSS Vintorez - MSG90 - Beowulf TCR

Battle Rifles

Beowulf ECR - SCAR-H - AK12BR - G3 - AG-3 - Henry 45-70
FAL 50.00


KSG-12 - Remington 870 - DBV12 - KS-23M - Saiga-12
Stevens DB - AA-12 - SPAS-12

Secondary Weapons Pistols

M9 - G17 - M1911 - Desert Eagle L5 - M45A1 - Five Seven
ZIP 22 - Desert Eagle XIX

Machine Pistols

G18 - 93R - TEC-9 - Micro Uzi - MP1911


MP412 REX - Mateba 6 - 1858 New Army - Redhawk 44
Judge - Executioner


Serbu Shotgun - SFG 50 - Sawed Off - Saiga-12U - Obrez

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