Armed Assault Wiki
Faction Icon-side-redfor.png CSAT
Icon-side-redfor.png Viper
Icon-side-redfor.png Russian Spetsnaz
Type Riflescope
Magnification 2x
Zeroing range Primary scope:
  • 300 m (fixed)

Top mount collimator:

  • 200 m (fixed)
Variants ARCO AK



The ARCO (full name: Advanced Rifle Combat Optics) is a low-powered riflescope used by both CSAT forces and Viper units, along with Russian Spetsnaz operatives in ArmA 3.


The ARCO has a fixed zeroing range of 300 m for its thermally transparent (i.e. thermally hot targets will be visible in thermal vision mode) primary scope and a magnification strength of 2x.

It has a backup collimator sight fitted above the primary scope for use in close quarters. The backup collimator is set to a zeroing of 200 m and is also thermally transparent.

The ARCO uses a crosshair reticle with an illuminated chevron but the reticle will not be visible in thermal vision. It is optimised for use with 6.5 mm-chambered firearms (both caseless and cased). This includes:

  • The AK-12 series of modular rifles (7.62 mm; all sub-variants)
  • CMR-76 bullpup marksman rifle (6.5 mm)
  • Katiba bullpup rifle (6.5 mm)
  • Mk200 light machine gun (6.5 mm)
  • The MX series of modular rifles (6.5 mm; all sub-variants)
  • The Promet series of modular bullpups (6.5 mm; all sub-variants)
  • Type 115 special purpose rifle (6.5 mm-chambered rifle component only; does not apply to the underbarrel .50 BW anti-materiel rifle module)

Beginning with the chevron, the ranges for each horizontal bar rise in 100 metre increments. This starts at 300 metres (tip of the chevron) and goes all the way up to a maximum of 900 metres at the lowermost marker.

On the other hand, the marker located just above the chevron (isolated from the rest of the reticle) is only set for targets at ranges of 100 metres.


  • ARCO AK: Unique variant optimised specifically for use with the AK-12's 7.62 mm round. It remains otherwise identical to regular ARCO scopes.


  • Black: Black paint finish. Used by both Mediterranean and North African CSAT forces.
  • Sand: Desert sand paint finish. Utilised by Viper Team operatives.
  • Green Hex: Tropical Hexacam camouflage pattern. Exclusive to Pacific CSAT marksmen.
  • Arid: Desert camouflage pattern.
  • Lush: Woodland camouflage pattern. Exclusively utilised by Russian Spetsnaz operatives.


  • The ARCO is based on the real-life "SpecterOS 4x", a combat optical sight made by Canada-based company ELCAN Optical Technologies.
    • The top mount reflex on the other hand appears to be based on the "DOCTERsight II plus", a reflex sight manufactured by DOCTER Optics of Germany.
  • The Black and Green Hex versions were not added until the release of the Apex expansion.
    • The dedicated AK scope variants and Arid/Lush finishes would not be included until the addition of the Contact expansion pack.
  • When depth of field was enabled, the reticle markings on the primary scope would become extremely blurry and difficult to read under certain lighting conditions. This was eventually addressed in a hotfix to Game Update 2.02 which corrected the ARCO's model to use radial blurring instead (separate from the game's DoF settings).


External links

See also

Optical sights of comparable role and configuration

Weapon attachments of ArmA 3
Collimators ACOMRDYorris J2
Holographic sights Mk17 Holosight
Sniper scopes AMSDMSKahliaLRPSMOS
Thermal/Night vision TWS (MG) • NightstalkerNVS
Aiming devices IR laser pointer
Illumination Flashlight
Muzzle SIMCOM AdapterSound 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