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Fire Control Systems

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This guide's purpose is to create a easy reference for the various fire control systems used in the different weapons and vehicles in the UOA3 Server.

What is a Fire Control System?

A fire control system is essentially a means to aim, lay, adjust, guide, or otherwise assist the operator in the employment of a weapon. It might be as simple as a sight adjustment on ironsights or as advanced as a computerized system that can account for lead, range, and movement.

Ground Vehicles

The following is a list of FCS found on the various tracked and wheeled ground vehicles in game.

T-72B obr 1984, 1985, 1989

The Cold-War era T72B models use the 1A40 FCS. This system essentially uses a laser to calculate range to a target placed in the red circle of the sight. It then automatically adjusts a large chevron in the sight to the correct aiming point for that range for whichever round is currently loaded into the gun. These sights also lack the higher magnification of more modern systems.

Key points:

  • The RED CIRCLE is used to determine what point on the ground is ranged during lasing, the CHEVRON is the actual aim point once the sight has adjusted to the range.
  • This system does not calculate nor apply lead on a moving target, lead must be estimated by the gunner.
  • Each round type has a different trajectory, the target must be lased again and a new solution obtained before firing a different type of round.
  • Lasing targets in not required to fire or guide the ATGM, simply keep the chevron of the 1K13-49 sight on the target.
  • The auto-loader cannot unload rounds, the round type must be switched and loaded round fired before a different round can be used.
  • The FCS only adjusts aimpoint for the main gun, the co-axial machinegun has range markings (in 100s of meters) on the left side of the vertical line on the day-sight. The sight must be ranged to 0m for these to be accurate.
  • No thermal sight, and only basic night sights.

Controls (Default)

  • T: Lase Target
  • X: Change Round Type in Auto loader (next round to be loaded)
  • Z: Toggle auto-loader to either load the next round automatically, or on command from the gunner (R by default). (Useful if you anticipate the need to switch between different rounds often)
  • + / -: Switches between sights, Day Sight (FCS), ATGM sight (No FCS), Periscope (No reticle), Night sight (No FCS)
  • F: Toggle between Main Gun and Coax Machinegun
  • Page Up/Down: Manually range the sight up and down.


  1. Once desired round is loaded, lase the target, using the RED circle.
  2. Wait for the chevron to adjust to the correct range.
  3. Once adjusted, place chevron on target, and adjust for lead if necessary.
  4. Fire once sight is aligned.
  5. Repeat lasing process if target's range changes or a different round type is loaded.
  • (ATGM)
  1. Cycle through sights until the ATGM day sight (or night sight if applicable) is selected.
  2. Place chevron on target (no lasing required).
  3. Fire missile and keep chevron on desired point of impact (note: the missile has a slight top down attack profile, it will guide high until close to target, at which point it will drop down into it.)

T-90A, BMP-3 (Vesna-K), BMD-4, BMD-2M, T-80UM, T-80UK, T-72B3

Modern Russian tanks and IFVs have a more advanced FCS that is similar to their Western counterparts. These sights use a laser rangefinder to determine range, but are much faster to adjust their sight, and typically feature simpler reticle designs, thermal modes, ranging for both main and co-axial armaments, and higher levels of magnification. These can be either integrated with older-style systems (such as in the T-80 and T-90) or more standardized (such as in the BMD4 and T-72B3)

Key Points

  • Targets must be lased while the desired weapon/ammunition type to be ranged is selected and/or loaded.
  • Lead is automatically calculated and applied once the target is ranged as the gun is traversed.
  • Some of the older vehicles may have a limited field of vision while using the thermal mode.
  • Variable levels of magnification available, unlike the older Soviet-era FCS.
  • Coaxial machineguns are typically able to be ranged, so long as they are selected first and then the target is lased.


  • T: Lase target.
  • F: Switch between Weapons/Rate of Fire (Main gun, Auto-Cannon (BMP, BMD), Coax machinegun.)
  • X: Switch main-gun ammunition type. (T-72, T-80, T-90), note the BMP3 and BMD4 can switch main-gun round types without having to fire them first (via the action menu).
  • Z: Change auto-loader mode, as in the T-72. (Only applies to T-72, T-80, and T-90)
  • G (throw item key): Dumps the lead after lasing a target. The gun will zero out its lead (not range), and will not automatically apply lead until the target is lased again.
  • + / -: Switch between sights and/or magnification.


  1. Once desired round is loaded/Weapon selected, lase the target using the center of the crosshair.
  2. When the range to target (in meters) appears on the bottom of the sight, ensure the crosshair is on the target and it is being tracked smoothly if moving.
  3. Fire the gun/missile, maintain tracking the target if using the missile.
  4. Re-lase if the target's range changes, or weapon/ammo type changes.

BMP-2, BMD-2, BTR-80A, BTR-80

1980s-era Soviet IFV and APCs feature a similar sighting system between them. Essentially a somewhat complex reticle has range markings for each armament and ammunition type, and the sight can be adjusted up or down until the desired sight picture for a particular range/ammo combination is reached. Often times a gunner may simply adjust based on the fall of their tracers, but for longer ranges these sights can help get rounds on target faster.

Key Points

  • No laser or precision rangefinding ability outside of simple stadia lines for estimating target distance based on height.
  • Limited magnification/levels of magnification. Situation awareness for the gunner can be limited.
  • Lead must be estimated manually by the gunner
  • No thermal mode, night-vision limited to night sight.


  • Page Up/Down: Range the sight up or down.
  • F: Change weapons type/rate of fire. (NOTE: In the BMP-2, the ATGM can only be fired by switching to the ATGM sight, it cannot be selected via this hotkey)
  • N: Illuminate the sight reticle.
  • +/-: Switch between sights/magnification.


  1. Estimate the range to the target, using the curved stadia line if needed.
  2. Apply the range to the sight by adjusting it up or down, until the horizontal line on the appropriate scale matches the your estimated range.
  3. Fire, adjusting the sight as needed.
    1. The ATGM on the BMP-2 must be selected by cycling to the correct sight. The ATGM on the BMD-2 is fired turned out from the hatch by selecting it via the action menu.