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Specna Arms SA-FX01 Flex Light Ops Stock HAL ETU Gen. 2 AEG Assault Carbine - Half-Tan

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€158.24
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€158.24

Specna Arms SA-FX01 Flex Light Ops Stock HAL ETU Gen. 2 AEG Assault Carbine - Half-Tan

Electric replica of an assault carbine in Half-Tan shade, belonging to the Flex Gen. 2 series, reengineered to deliver enhanced performance in its factory configuration. Outfitted with a quick-change spring system ESA and a HAL ETU control module, enabling customization of the replica’s parameters according to user preferences. The weapon features a Light Ops stock. All construction components are precisely fitted, ensuring high reliability and exceptionally smooth operation of the mechanism.

Reinforced nylon fiber polymer body, steel elements

Featuring a carbine body constructed from reinforced nylon fiber polymer, the Free Float-style front, receiver extension, Light Ops Stock, and pistol grip all benefit from this durable material. The barrel, flash hider, enlarged charging handle, and operational controls are crafted from an aluminum and zinc alloy. Steel components include the ejection port cover, dummy bolt, as well as all pins and screws. The body comes detailed with markings and a unique serial number.

Light Ops Stock, ESA quick spring change system

Featuring a lightweight Light Ops stock with an adjustable telescopic construction, the replica ensures enhanced maneuverability. Both sides of the cheek rest incorporate rubber, non-slip inserts to boost stability while aiming. The buttstock is fitted with a curved rubber pad that provides a secure and comfortable fit against the shoulder. With the ESA quick spring change system, the carbine’s power can be swiftly adjusted to meet field requirements without the need for specialized tools.

High-quality internal components

The replica is equipped with premium-grade internal components:

  • a rotating Magnus Top Down Center Hop-Up chamber
  • Helium Flat Hop bucking
  • an aluminum sealed nozzle
  • 8 mm plain bearings
  • steel gears
  • a polycarbonate piston featuring a full steel rack
  • a precision barrel with a 6.03 mm inner diameter

Reinforced Ather gearbox

The carbine features a reinforced Ather gearbox distinguished by:

  • main spring quick-release mechanism
  • inspection ports for pre-cocking and AoE adjustments
  • fortified front section
  • inspection windows to simplify the shimming process
  • adjustable trigger system
  • pre-drilled screw holes for precise framework alignment
  • compatibility with M140 springs

HAL ETU electronic control system

Equipped with the HAL ETU electronic control system, the replica offers extensive features enabling customized tuning of the trigger mechanism and firing modes to match individual user preferences:

  • trigger position detected through magnetic sensors utilizing the Hall effect
  • integrated active braking system
  • binary fire mode capability
  • five levels of trigger sensitivity adjustment, ranging from 20% to 100%
  • six levels of pre-cocking settings available
  • automatic fire modes are programmable, including full auto, semi-auto, 3-round burst, and 5-round burst
  • single shot modes can be configured—semi, binary, AUG, and sniper settings
  • all programming functions are controlled via the trigger
  • low battery warning indicator
  • supports compatibility with brushless motors

Set elements

  • Specna Arms SA-F01 Flex Light Ops Stock HAL ETU Gen. 2 AEG Assault Carbine - Half-Tan
  • Hi-Cap S-MAG magazine
  • spare M90 spring
  • Tamiya small to T-Deans converter
  • barrel cleaning rod
  • hexagonal wrench

Main features

  • Flex Gen. 2 series
  • High-strength body crafted from reinforced nylon fiber polymer
  • Components feature steel elements for enhanced durability
  • Equipped with a telescopic Light Ops Stock for adjustable comfort
  • Comes with the ESA quick spring change system for rapid tuning
  • Features a rotating Magnus Top Down Center Hop-Up chamber for optimal accuracy
  • Utilizes the Helium Flat Hop bucking for improved range and consistency
  • Fitted with a precision barrel measuring 6.03 mm in diameter
  • Built with a reinforced Ather gearbox for reliable performance
  • Integrated HAL ETU electronic control system for advanced operational control
Specna Arms


Militaria.pl is a premium dealer of Specna Arms.


Specna Arms is a brand specialized in the production of ASG replicas, valued for their solid workmanship and value for money. The offered models are characterized by realistic appearance and high durability. The range includes a variety of series - from lightweight CORE™ models for beginners, through advanced EDGE™ models with metal bodies and licensed markings, to top PRIME™ replicas with brushless motors and modern electronics. The brand collaborates with renowned companies such as Rock River Arms and Daniel Defense. Specna Arms has a reputation among both beginners and advanced airsoft players.

More Information
Based on M4
Replica propulsion Electric
Muzzle velocity 400 fps
Accurate shot range Up to 40 m
Magazine type Hi-cap
Magazine capacity 275 6 mm caliber BBs
Gearbox Reinforced
Body Polymer
Overall length 760 mm
Weight 2000 g
Main color Half Tan
Optics ready Yes
Fixed sighting devices Yes
Blowback No
Additional accessories included Yes
Accessory rail Yes
Hop-up Yes, adjustable
Plug type Deans/T-Connect
EAN 5902543207364
Manufacturer code SPE-01-047453
Brand Specna Arms

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