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NOTE: This article is about the M21 sniper rifle in the main ArmA games. For other similarly named articles, you may wish to use the following links instead:

The M21 is a 7.62 mm sniper rifle featured in ArmA: Cold War Assault and ARMA Reforger.

ArmA: Cold War Assault

« The United States M21 sniper rifle is a modified M14 National Match rifle, with a high accuracy rating to approximately 900yds/822m. It has a 20 round detachable magazine and is gas operated and air-cooled. Standard models include a 3x to 9x Automatic Ranging Telescope (ART) sight.
Weapon Description

M21 7.62 mm
Faction Icon-side-blufor.png United States
Type Sniper Rifle
Calibre 7.62×51 mm NATO
Dispersion 0.00003 rad
Variants None
The M21 7.62 mm sniper rifle.

The M21 is a 7.62 mm sniper rifle used exclusively by U.S. military forces in ArmA: Cold War Assault.


The M21 is a gas operated sniper rifle with a rotating bolt that is chambered to fire the 7.62×51 mm NATO round.

It loads from 20-round box magazines, and can attain a fire rate of up to 200 rounds per minute with a muzzle velocity of 853 m/s. The M21 is fitted with a riflescope that has a variable magnification power ranging from between 3x and up to 9x strength.

U.S. sniper/spotter team. Note the riflescope fitted onto the sniper's M21 (right).

Wielded by the U.S. military's sniper teams at the height of the Malden Islands Crisis, the M21 is accurate at distances of up to 800 metres.

Compared to its Soviet counterpart, the M21 has a few advantages; namely the fact that its magazines have double the capacity, and that the M21 doesn't rely on a scope with a fixed zoom. This provides the M21's user with a clearer view of targets located beyond 600 metres.

Although the M21 has a slightly lower muzzle velocity of 853 m/s (compared to the SVD's 900), the difference is negligible at best and is equally capable of outright killing enemy infantry with just a single hit to the torso. Overall, all of these traits combined make the M21 a solid sniper rifle and arguably, the better choice out of the two weapons as well.


Base damage value Initial velocity (m/s)
10 853

The M21 can only load one type of magazine. It requires one free inventory slot to carry:

M21 Mag.

20-round detachable box magazine.


  • Though not officially used by any of their units, the Nogovan Partisans are able to obtain a small number of M21s from the covert American arms shipments in Resistance.
  • In Operation Flashpoint: Elite, a console-exclusive port of Operation Flashpoint: Cold War Crisis for the XBOX (Cold War Assault's former title), the M21 features a more distinct woodland green camouflage compared to its original counterpart. Its appearance makes it reminiscent of the M24 sniper rifle from ArmA: Armed Assault/ArmA 2.


ARMA Reforger

« 7.62×51mm semi-automatic sniper rifle.
Weapon Description

M21 SWS 7.62 mm
Faction Icon-side-blufor.png United States
Type Sniper Rifle
Calibre 7.62×51 mm
Dispersion 0.400 m
Weight 3.75 kg (unloaded)
Variants None
The M21 SWS 7.62 mm sniper rifle.

The M21 SWS is used exclusively by U.S. military forces in ARMA Reforger.


This section is a stub. You can help Armed Assault Wiki by expanding it.

Reforger's M21 SWS serves as the primary weapon of U.S. sniper teams and is roughly analogous to the Soviet SVD.

Compared to its Cold War Assault predecessor, Reforger's M21 has a much greater fire rate of 700 RPM, though its muzzle velocity remains unchanged at 853 m/s.

The M21 cannot be fitted with a suppressor but it does support the mounting of an ART II riflescope. If the scope is not mounted, the user can opt to manually zero the M21 instead. Zeroing starts at a minimum of 100 m up to a maximum of 1,000 m. Adjustments are always made with increments/decrements of 100 m.


Ammo parameters M118 SB
Base damage value 142
Classification FMJ
Aerodynamic friction 0.0000083
Initial velocity (m/s) 853
Penetration depth (mm) 11
Penetration density (g/cm3) 7.860
Penetration speed (m/s) 854

The M21 SWS is only capable of loading one type of magazine:

7.62×51 mm 20rnd M14 SB Mag

20-round box magazine loaded with M118 Special Ball (SB) ammunition. Does not contain visible tracer rounds.

It has a weight of 0.250 kg, occupies a 1x1 inventory slot, and has a volume of 200 cm3.


External links

See also

Weapons of comparable role and configuration

Weapons of ArmA: Cold War Assault
Handguns 92F 9 mmCZ-75 9 mmGlock 17 9 mmS&W .357Tokarev TT-33 7.62 mm
Submachine guns Ingram .45MP5SD3 9 mmPP-19 Bizon 9 mmSa-61 Scorpion 7.65 mmUZI 9 mm
Shotguns Kozlice
Carbines AK-74 SU 5.45 mmXM-177E2 5.56 mm (XM-177S)
Assault rifles AK-47 7.62 mm (AK-47 GL, AK-47 CZ) • AK-74 5.45 mm (AK-74 GL) • AUG A1 5.56 mmFN-FAL 7.62 mmG3A4 7.62 mmG36 5.56 mmM16A2 5.56 mm (M16A2 GL)
Sniper rifles Hunting Rifle 7.62 mmM21 7.62 mmSVD 7.62 mm
Machine guns M60 7.62 mmPK 7.62 mm
Grenade launchers 6G30MM-1
Launchers 9K32 Strela-2AT-4 SpigotCarl Gustav M2FIM-92 StingerM72 LAWRPG-75NH
Static M2
(Parenthesis) denote variants.
OFP-factionicon-unitedstates.png United States - Armoury (ArmA: Cold War Assault)
Handguns 92F 9 mmGlock 17 9 mmS&W .357
Submachine guns MP5SD3 9 mmUZI 9 mm
Carbines XM-177E2 5.56 mm (XM-177S)
Assault rifles AUG A1 5.56 mmM16A2 5.56 mm (M16A2 GL)
Sniper rifles M21 7.62 mm
Machineguns M60 7.62 mm
Grenade launchers MM-1
Launchers Carl Gustav M2FIM-92 StingerM72 LAW
Static M2
(Parenthesis) denote variants.
Weapons of ARMA Reforger
Handguns M9 9 mmPM 9 mm
Assault rifles AK-74 5.45 mmM16A2 5.56 mm
Sniper rifles M21 SWS 7.62 mmSVD 7.62 mm
Squad automatic weapons M249 SAW 5.56 mmRPK-74 5.45 mm
Machine guns M60 7.62 mmPKM 7.62 mm
Launchers M72A3 LAWRPG-7V1
Static M2HB - TripodM60 - TripodPKM - Tripod
OFP-factionicon-unitedstates.png United States - Armoury (ARMA Reforger)
Handguns M9 9 mm
Assault rifles M16A2 5.56 mm
Sniper rifles M21 SWS 7.62 mm
Squad automatic weapons M249 SAW 5.56 mm
Machineguns M60 7.62 mm
Launchers M72A3 LAW
Static M2HB - TripodM60 - Tripod