The MOS (full name: Marksman Optical Sights) is a medium powered, variable-magnification sniper scope primarily used by both NATO forces and the Livonian Defense Force, as well as in limited numbers with the AAF in ArmA 3.
Design[]
The MOS can switch between two fields of view.[CfgWp 6] At minimum, it has a magnification of 2.33x zoom[CfgWp 1][Formula 1][note 1] and 5x zoom at maximum magnification.[CfgWp 2][Formula 2]
Zeroing for the primary scope can be manually adjusted, starting from a minimum of 300 m up to a maximum of 1,600 m.[CfgWp 3] By default, the primary scope is set to a zeroing of 300 m.[CfgWp 7] On the other hand, the backup ironsight does not allow for manual adjustments as it forces a fixed zeroing setting of 200 m.[CfgWp 4]
The MOS uses a Y reticle with milliradian markings in all axes. It is compatible with most* marksmen and sniper rifles alike, which includes (but is not limited to):
- CMR-76 bullpup marksman rifle (6.5 mm)
- Cyrus marksman rifle (9.3 mm)
- GM6 Lynx bullpup sniper rifle (12.7 mm)
- M320 LRR sniper rifle (.408)
- MAR-10 marksman rifle (.338)
- Mk-I EMR marksman rifle (7.62 mm)
- Mk14 battle rifle (7.62 mm)
- Mk18 ABR battle rifle (7.62 mm)
- MXM marksman rifle (6.5 mm)
- Promet MR bullpup marksman rifle (6.5 mm)
- Rahim bullpup marksman rifle (7.62 mm)
- SPAR-17 marksman rifle (7.62 mm)
(*) The MOS is not intended for use on the ASP-1 Kir as the latter is not considered to be a "true" marksman rifle.
It should be noted that attaching the MOS will increase the inertia penalty of the weapon that it is mounted onto by +0.2.[CfgWp 8]
AI[]
NOTE: The information in this section only applies to the AI.
The MOS is classified[1] as a type 2 optical sight.[CfgWp 9] If the weapon is configured with AI-only firemodes[2], AI units that have the MOS mounted onto their weapon will have access to far range firemodes.[3]
Camouflage[]
- Black: Standard matte black finish. Used by the LDF, Mediterranean NATO forces, and with the AAF.
- Khaki: Forest green paint finish. Exclusive to Pacific NATO forces.
Trivia[]
- Prior to the release of the Marksman DLC, the MOS was called the SOS (Sniper Optical Sights)[4] and used the same reticle as the LRPS.[5]
- The MOS is specifically labelled as a product of Clearskeye, an Armaverse company that specialises in magnified optics.[6]
- The information below details unused, pre-release or removed content.
- In the pre-Alpha phase of ArmA 3's development, the MOS (when it was still known under its previous name as the SOS) used a completely different reticle. In addition to having a different reticle, the MOS also possessed an integrated laser rangefinder.[7]
Gallery[]
Video[]
Config/script references[]
CfgWeapons[]
- ↑ 1.0 1.1 CfgWeapons >> optic_SOS >> ItemInfo >> OpticsModes >> Snip >> opticsZoomMax >> "0.107"
- ↑ 2.0 2.1 CfgWeapons >> optic_SOS >> ItemInfo >> OpticsModes >> Snip >> opticsZoomMin >> "0.05"
- ↑ 3.0 3.1 CfgWeapons >> optic_SOS >> ItemInfo >> OpticsModes >> Snip >> discreteDistance[] >> {300,400,500,600,700,800,900,1000,1100,1200,1300,1400,1500,1600}
- ↑ 4.0 4.1 CfgWeapons >> optic_SOS >> ItemInfo >> OpticsModes >> Iron >> discreteDistance[] >> {200}
- ↑ CfgWeapons >> optic_SOS >> ItemInfo >> mass
- ↑ CfgWeapons >> optic_SOS >> ItemInfo >> OpticsModes >> Snip >> discretefov[] >> {0.107,0.05}
- ↑ CfgWeapons >> optic_SOS >> ItemInfo >> OpticsModes >> Snip >> discreteDistanceInitIndex >> "0"
- ↑ CfgWeapons >> optic_SOS >> inertia >> "0.2"
- ↑ CfgWeapons >> optic_SOS >> ItemInfo >> opticType >> "2"
Formulae[]
Notes[]
- ↑ The in-game tooltip states that the MOS has a minimum zoom of 2.5x but the formula for calculating its zoom actually returns a value of 2.336448598130841 instead (0.25 / 0.107).
References[]
- ↑ Revial, F et al. 2020, Arma 3: AI Config Reference, Bohemia Interactive Community Wiki, viewed 24 December 2024, <https://community.bistudio.com/wiki/Arma_3:_AI_Config_Reference#opticType>.
- ↑ Reyhard et al. 2007, CfgWeapons Config Reference, Bohemia Interactive Community Wiki, viewed 24 December 2024, <https://community.bistudio.com/wiki/CfgWeapons_Config_Reference#showToPlayer=true>.
- ↑ Revial, F et al. 2020, Arma 3: AI Config Reference, Bohemia Interactive Community Wiki, viewed 24 December 2024, <https://community.bistudio.com/wiki/Arma_3:_AI_Config_Reference#requiredOpticType>.
- ↑ Mořický, K et al. 2013, Arma 3: CfgWeapons Items, Bohemia Interactive Community Wiki, viewed 31 January 2025, <https://community.bistudio.com/wiki?title=Arma_3:_CfgWeapons_Items&oldid=75247>. (archived link)
- ↑ van 't Land, J.J. 2015, SPOTREP #00040, Arma 3, viewed 7 April 2023, <https://dev.arma3.com/post/spotrep-00040>.
- ↑ ARMA 3 2013 [Video Game], Bohemia Interactive a.s., MOS, \a3\weapons_f\acc\data\acco_sniper_f_co.paa, "CLEARSKEYE"
- ↑ Arpone, G 2011, ARMA 3 GamesCom Presentation 5/8, viewed 7 March 2024, <https://www.youtube.com/watch?v=aqWMolhgwoU>.
See also[]
Optical sights of comparable role and configuration[]
- AMS (Alternate NATO/CTRG counterpart, ArmA 3: Marksmen only)
- DMS (Alternate NATO/CSAT counterpart)
- Kahlia (CSAT counterpart, ArmA 3: Marksmen only)
- LRPS (NATO/CSAT sniper counterpart)
| Weapon attachments of ArmA 3 | |
|---|---|
| Collimators | ACO (SMG) • MRD • Yorris J2 |
| Holographic sights | Mk17 Holosight (SMG) |
| Riflescopes | ARCO (AK) • ERCO • MRCO • PMS • RCO |
| Sniper scopes | AMS • DMS (Kir, Old) • Kahlia • LRPS • MOS |
| Thermal/Night vision | TWS (MG) • Nightstalker • NVS |
| Aiming devices | IR Laser Pointer |
| Illumination | Flashlight |
| Muzzle | SIMCOM Adapter • Sound Suppressor (5.56 mm, 5.7 mm, 5.8 mm, 6.5 mm, Stealth, 7.62 mm, .338, 9 mm, 9.3 mm, .45 ACP) |
| Weapon mounts | Bipod |
| (Parenthesis) denote variants. Marksmen DLC | Apex DLC | Contact DLC | |