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ASTER V2 SX with Quantum Trigger

ASTER V2 SX with Quantum Trigger

Each ASTER V2 SX comes with free black QUANTUM Trigger

Regular price USD 72.90
Regular price Sale price USD 72.90
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Free express shipping

Free express shipping via courier on all orders over 250 USD

Shipping & Returns

Destination Express shipping via Fedex/UPS Polish National Postal Service
 Europe 2-7 business days 1-2 weeks
Asia 2-5 business days not available
US/Canada 2-3 business days not available
Australia 3-4 business days not available


*Please note that the above delivery times may be extended due to custom duty procedure.


1. The Goods purchased in the Online Store are delivered worldwide, subject to territorial restrictions under applicable laws.
2. The Goods are delivered via specialised courier companies or Poczta Polska (the Polish national postal operator). In some cases, the Goods may be personally collected from the Seller’s registered office, and in the case of the Goods that represent digital content – they may be downloaded on an appropriate device.
3. The Goods are shipped within 1 to 3 (one to three) business days from payment booking. In some cases, the Goods can be shipped at a later date. This applies also to the Goods sold in advance (pre-sale). In such a case, the Seller shall inform the Client about a shipment date. An approximate shipment delivery date depends on a delivery method selected and a destination country, and is specified at order placement. When selecting a transfer payment option, the delivery time indicated on the Website shall be increased by time needed to credit the Client’s entire payment to the Seller’s bank account, usually 1-2 (one to two) business days. Further, in the case of countries outside the European Union, due to distance and potential customs controls the delivery time may be prolonged up to 5 weeks.
4. Detailed delivery method information is available in the Online Store in a Cart section of the given Product.
5. The Goods are shipped to an address specified in an order form or provided by phone or by e-mail. The Seller shall promptly inform the Client about the fact that an order form has been filled in incorrectly if this prevents or delays the conclusion of the Sales Agreement or the delivery of the Goods.
6. Prior to the acceptance of shipment from a postal or a courier service, packaging should be checked for any potential damage inflicted in transport. In particular, the condition of tapes or seals placed on the shipment shall be verified. If shipment package shows any signs of damage or if the seals (tapes) are removed, the shipment shall not be accepted, a damage report shall be prepared in the presence of a courier and the Seller shall be contacted as soon as possible in order to clarify the issue. If discrepancies in terms of shipment quantity or quality are not detected at the acceptance, this might adversely affect the resolution of the Client’s claims filed due to shipment damage or theft in transport.
7. In the case of the Goods that represent the firmware upgrade of devices distributed by the Seller (digital content), the Client, upon the placement of the Order, conclusion of the Sales Agreement and payment, shall connect to a GATE CONTROL STATION desktop application via a USB-Link or Blu-Link device and install the upgrade purchased.

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  • ASTER SX for V2

    ASTER SX for V2 gearboxes – the natural successor of ASTER SE – merges years of experience with cutting edge tech. ASTER SX is fully compatible with popular brushless motors – even with batteries up to 11.1 V. The unit heats up less even while accommodating higher loads. ASTER can operate with stronger springs and more demanding configurations. ASTER SX comes with a free Quantum Trigger, so you can easily set sensitivity from ludicrous touch through hair to full movement. Improved programming via trigger gives you settings such as automatic Pre-Cocking, trigger sensitivity adjustment, Active Brake settings with top-class adaptive mode. Calibration available just via trigger and selector movement. ASTER V2 SX turns your AEG into future-proof advanced training equipment. All this, along with a thicker and sturdier PCB – 1 mm in thickness – makes ASTER V2 SX one of the most durable ETUs on the market. 

  • ASTER is future-proof, thanks to compatibility with USB-Link and Blu-Link. You can update your firmware and get new options, connect additional accessories, check telemetry.


    What is an ETU? It is an Electronic Trigger Unit replacing trigger contacts and the cut-off lever, which takes control of your AEG.

    Why ASTER's programming via trigger is user-friendly?


    • you do not need to rush
    • you can navigate the menu very quickly and efficiently or slowly and calmly
    • the colors of the led lights are only a help – you can rely on the vibration of the motor
    • in case of any problems, you can use the very popular USB-Link or Blu-Link and use the GCS App


    What is the self-learning automatic pre-cocking?


    • thanks to Pre-cocking, you gain trigger reaction similar to real life
    • it will automatically set piston position
    • it is easy-to-use, just set one of the 3 modes: LOW, MID or HIGH
    • it automatically adapts to the battery voltage and rate of fire
    • ASTER gives you great flexibility and is future-proof. Today you can program the most important functions with the trigger, and tomorrow you can borrow a USB-Link or Blu-Link from a friend to configure advanced functions, perform a firmware update, run diagnostics or use the GCS app on a smartwatch
    • Hair-trigger – up to 60 sensitivity in the first millimeter of trigger movement
    • Top-notch automatic pre-cocking
    • Foregoing reverse polarity protection in exchange for unparalleled performance
    • You can update its firmware via the Internet
    • ASTER is a part of the GATE Ecosystem
    • Lowest in the market current consumption. Deep sleep mode with only 0.29 mA current consumption prevents battery discharge
    • Built-in voltage boost converter allows for trouble-free operation with weaker batteries and increases the switching efficiency
    • 3.75 V ready – it operates at very low voltage (even 1.2 V during the shot), which is important in high-tuned AEGs, where the voltage under load drops significantly
    • Sensor that supports Infinite Torque-up, DSG, SSG, 19-tooth and standard gears
    • The possibility of using a mechanical trigger lock
    • Compatibility with brushless motors

    Brushless motors compatibility

    Full compatibility with popular brushless motors – even with batteries up to 11.1 V

    Heat dissipation

    Reduced unit heating while accommodating higher loads

    Strong spring compatibility

    Up to M200 spring


    Rev. 2

    PCB thickness

    ↕️ 1 mm thick PCB

    Sensor Diagnostic Mode



    Brushless motors compatibility

    Partial compatibility with brushless motors. Recommended battery capacities up to 7.4 V

    Heat dissipation

    Standard units heating while accommodating higher loads

    Strong spring compatibility

    Up to M150 spring


    Rev. 1

    PCB thickness

    ↕️ 0.9 mm thick PCB

    Sensor Diagnostic Mode


  • Supply Voltage Range

    3.75-12.9 V

    Rated Current

    30 A

    Current Consumption

    23 mA

    Low Power Mode

    288 µA

    Dimensions (Length x Width x Height)

    43.8 mm x 28.7 mm x 7.7 mm

    Finished Product Weight

    23.35 g

    Operating Temperature Range

    min. -15°C max. + 50°C

    Relative Humidity

    ≤ 80%

  • Connect your ASTER V2 SX with the GCS App and get total control of your AEG

    You choose how to configure ASTER V2 SX – simply via trigger or through USB-Link / Blu-Link and our advanced GCS App. You can ask your technician to update ASTER V2 SX firmware using Blu-Link or USB-Link, carry out diagnostics or change settings in a very convenient way. You can also get your own Blu-Link and use the Smartwatch app, giving you real-time data to reinforce your tactical decisions.

    Control your airsoft replica from your iOS, Android, macOS or Windows device using an additional dongle—USB-Link or BluLink
    Set trigger sensitivity exactly as you like and adjust other ASTER V2 SX settings in a simple way
    Use automatic Pre-Cocking to gain a trigger reaction just like in a real replica

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    ASTER and GCS App give you total control of your AEG. ă…¤


    The GCS offers you the option to:

    • Control your airsoft gun from a smartphone with Android, iOS and PC with Windows or macOS

    • Get real-time data from your smartwatch (with Wear OS or watchOS) to reinforce your tactical decisions and get the advantage necessary to win

    • No more surprises with an empty magazine or a discharged battery

    • Easily adjust the ASTER settings during the game

    • Update and upgrade firmware

    • View the BB counters, electrical measurements, and statistics

    • Perform diagnostics and send reports

    • Get the latest news from GATE Enterprise


    Download GCS App 



Enables you to set two different trigger sensitivities. Pulling the trigger slightly produces SEMI or BURST fire. Pulling it further produces BURST or AUTO fire. Select your sensitivity preferences for each stage.


Two selector sensors allow you to take advantage of hundreds of selector mode variations. The following modes are available for selection:

SAFE – prevents your replica from firing, even if the safety lever is removed

SEMI – allows you to fire one shot per one trigger pull

BINARY – allows for firing one shot on the trigger pull and another shot upon release 

BURST – enables you to shoot a predetermined number of BBs, which is very useful in MilSims and when using low-caps; there are 2 BURST Modes available: 

  • Full – a burst is shot in full, even if the trigger is released before the preset number of BBs has been shot
  • Interruptible – the burst can be interrupted by releasing the trigger earlier - when the trigger is released, the shooting stops even if not all the BBs from the burst have been shot

BURST/AUTO – available in Full BURST Mode only; allows for extending a burst by any number of shots – if you hold the trigger after the burst is shot, it switches to AUTO Mode 

AUTO – shots are fired as long as the trigger is pulled

SEMI RAMPING – if you pull the trigger very fast, it switches to AUTO Mode

Please note: In the case of Regional Lock, only SEMI Mode is available. Check law restrictions in your country.


Victory in the game is often a matter of fractions of seconds. Thanks to pre-cocking, you gain trigger reaction similar to a real replica. This allows for initial spring compression, which speeds up trigger response significantly.

There are two Pre-Cocking Modes:

  1. AUTO Mode – the spring is automatically compressed after each shot—you choose the level of pre-cocking from the list (percentages or levels)
  2. MANUAL Mode – set the pre-cocking values yourself—instead of percentages there are time settings, you have to choose the time for yourself by trial and error

*Now Pre-Cocking is fully operational in SEMI, BURST, and AUTO Modes

Please note: using Pre-Cocking increases wear and tear on the gearbox.


This feature allows for simulating magazines of lower capacity than actually used. Allows you to set a simulation of magazine capacity from 1 BB up to 250 BBs. Even if you have a high-capacity magazine, this function lets you truly increase the realism of your game by imitating a real-cap mag. Then, after a predetermined number of BBs is shot, you will have to wait for a previously defined amount of time before the next shot can be fired as if you were really replacing an empty magazine with a full one. You can also set Low Ammo Warning.


Enables to set a predefined number of BBs fired in a single series from 1-250 BBs. It can be used as protection against trigger jams. In case of emergency, you can stop the series by switching the selector position.


It lets you set the delay between shots or series to simulate the delay from reload or recoil. You can set the delay within the range of 0.01-5 s.


ROF Control enables the reduction of a replica’s rate of fire. You can use stronger batteries and still have the ROF exactly as you like. You can choose between Adaptive, Manual PWM, Manual Delay, and Manual Delay + PWM.

Adaptive – set your desired rate of fire; the brake and delay will be automatically adjusted to achieve this value

Manual PWM – set the motor power throughout the duration of the shot

Manual Delay – set the exact delay between shots in milliseconds

Manual Delay + PWM – set braking power and delay manually


We know how vital fast trigger response during combat is. That's why we've developed the Smart Trigger function, which enables you to achieve faster trigger response. It works with the ROF Control System. During the first shot, the microprocessor sets the ROF control to 100%. After the first shot, it switches to a previously programmed value (e.g. 50%). As a consequence, the first shot is fired at a full ROF and subsequent shots at a reduced ROF. The best results can be achieved when using a battery with above standard voltage. For example, if you’re using a 7.4 V battery, you can replace it with a 11.1 V one. This way, you will achieve faster trigger response with the same rate of fire than with a standard battery. 


Protection against battery over-discharge. Modern LiPo and LiFe batteries are very sensitive to over-discharge. If you do not want to damage the battery and you care about its service life, this protection is indispensable. The microprocessor is constantly monitoring battery voltage. When voltage drops to a critical level, it will not allow firing. The number of battery cells can be detected automatically.

When battery voltage drops to a predefined level, the motor will vibrate at regular intervals. The user is warned 5 times before the battery is discharged. Each warning is communicated by 3 vibrations: HIGH → MID → HIGH. 

You can set the battery type: LiPo or LiFe as well as the number of cells or choose Manual and the Low Battery Warning and Battery Cutoff values.


Do you care about realism? Would you like to increase the life of the gearbox? Does your rifle have such a high rate of fire that you are not able to make a single shot? The Active Brake sorts things out. In SEMI Mode, the brake does not allow for compressing a piston after a shot. The piston will stop in the front position which eliminates unnecessary stresses, increasing the service life of the gearbox and its parts. This is important, especially with an AEG power upgrade. After releasing the trigger, the rifle immediately stops firing. So, you gain more realism and, additionally, you do not waste your precious ammunition.

Choose Adaptive or set it manually between 0-100%.

Decide if you want to use the Active Brake function. If you do not need this, you can turn it off easily. It will lead to improving the lifespan of your motor. Adaptive Active Brake automatically adjusts the motor's braking power according to your needs.


You don't need to fully release the trigger to fire the next shot. This option is really useful when the trigger sensitivity level is very high.

  • Off – to fire the next shot, you need to release the trigger until it reaches the selected trigger sensitivity level
  • 2 Level – to fire the next shot, just release the trigger so it changes the position by ~40% of trigger movement
  • 1 Level – to fire the next shot, just release the trigger so it changes the position by ~20% of trigger movement.
  • Manual – you can adjust the percentage of trigger movement exactly as you want


Thanks to the gear cam sensor, drop-in unit precisely detects in which position the cycle should finish. The sensor detects the gear cam instead of teeth, so it is possible to use all types of gears: Infinite Torque-up, DSG, SSG, 19-tooth and standard. 


This feature allows you to troubleshoot your AEG in case of any issue. Errors are communicated once they occur, and their description can be found in the GCS App.


Browse and switch between 3 different profiles tailored to different preferences during the game


Do you want to achieve a higher ROF and faster trigger response? Are you planning a power upgrade of your gun? In this case, you need a MOSFET.

It targets the energy from the battery directly to the motor, bypassing the mechanical trigger contacts. As a result, you gain a higher ROF of the gun and faster trigger response.


This allows you to quickly check whether the drop-in module is working properly. It helps to locate where the problem lies when anything goes wrong.


Thanks to its special conformal coating, our product is resistant to atmospheric conditions (Military Specification MIL-V-173C).


You can enable or disable information and warning vibrations, and make your replica stealth.


GCS allows for making firmware updates via the internet, which enables you to quickly apply changes, improvements, and bug fixes. 

    • Everything you need out-of-the-box
    • Quantum Trigger included in the kit
    • No need to use USB-Link for installation and configuration
    • New noise-resistant trigger detection algorithm
    • Hair-trigger out-of-the box. Even 60 trigger sensitivities for the 1st mm (0.04 in) of movement
    • Additional protection against interferences thanks to multi-layer PCB with EMC shield
    • Automatic Pre-Cocking: LOW / MID / HIGH
    • Trigger sensitivity adjustment without any limitation
    • Improved cycle detection
    • Active brake adjustment: Adaptive / 100% / 60% / Brushless motor / OFF
    • New selector mode: SAFE - SEMI - BINARY instead of SAFE - BINARY - AUTO
    • GCS App allows for making firmware updates via the internet, which enables quick applying of improvements
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Browse Manuals, FAQs, and get instant help with technical issues, warranty claims, and order enquiries.


    Transform your AEG into a computerized training system and gain a unique tactical advantage thanks to extremely fast trigger response—just like in real life.


    The younger brother of the well-known TITAN. Designed to achieve maximum reliability at an attractive price and destined for most AEGs. ASTER is destined for most builds.


    Get data in real-time directly from the STATUS screen to reinforce your tactical decisions. No more surprises with an empty magazine or a discharged battery.


    GATE Control Station is a free universal app for configuring, controlling, and connecting the GATE Ecosystem elements such as the TITAN, ASTER and STATUS.


    Virtual STATUS functions in your smartphone. No more surprises with an empty magazine or battery.


    GCS App provides essential STATUS functionalities such as the BB counter, magazine counter, and the remaining shots on the battery.


    Blu-Link allows for wireless management of your GATE ETU via the GCS App. You can use an iPhone, Android smartphone or a computer to control your replica with Bluetooth® 5.0.


    The USB-Link dongle is used for connecting GATE ETUs with PC, Mac, and Android devices. Working in tandem with the GCS App gives you full access to functions and settings.

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