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Specna Arms SA-F13 Flex Gate X-ASR Gen.2 AEG Assault Carbine - Black

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€155.90

Specna Arms SA-F13 Flex Gate X-ASR Gen.2 AEG Assault Carbine - Black

The second-generation Flex series assault carbine is presented here as an electric replica. Outfitted with a reinforced Aether gearbox and a rotating Hop-Up TDC Magnus chamber, this model delivers enhanced performance. By default, the carbine integrates the Gate X-ASR control system, providing users with the ability to personalize the replica's configuration.

Durable construction, folding peep sight, accessory rails

Manufactured using a blend of highly durable metal, steel, and plastic, the replica features a robust construction. The outer barrel, flash hider, charging handle, and controls are crafted from metal. All screws, pins, the ejection port, and the dummy bolt utilize steel components. The main body, handguard, pistol grip, and stock with receiver extension are made from nylon fiber reinforced polymer for increased strength. Authentic Specna Arms markings along with a serial number are present on the replica. Outfitted with a 22 mm dorsal RIS rail, the platform easily accommodates various optoelectronic sights. The default configuration includes a flip-up rear sight and a fixed front sight. Additional tactical accessories can be mounted via the set of front RIS rails.

Adjustable stock, non-slip texture, flash hider on a 14 mm thread

Equipped with an adjustable SF-type stock, the replica’s length can be tailored to suit the operator’s physique and individual requirements. Both the pistol grip and the butt plate feature a non-slip texture for enhanced control. The flash hider attaches via a standard left-handed 14 mm thread.

Quick spring change system ESA, rotating Hop-Up chamber, precision barrel

Equipped with a quick spring change system ESA, the replica enables swift tuning of its performance to match different gameplay scenarios. Supplied with an M90 spring, the set allows the reduction of the factory muzzle velocity from 390 FPS to approximately ~300 FPS, making the replica ideal for CQB environments. Integration of a rotating Hop-Up chamber TDC Magnus and a Helium Flat Hop bucking ensures exceptional BB spin consistency. The carbine also features a 6.03 mm precision barrel, enhancing shot accuracy.

Specna Arms Aether Gearbox

At the heart of the replica lies a V2 gearbox designed around the reinforced Specna Arms Aether framework (protected by European Patent number: 015044865-0001). This gearbox comes equipped with:

  • a main spring release mechanism
  • pre-cocking inspection ports and AoE inspection windows
  • a strengthened front section
  • inspection ports allowing for effortless priming
  • an adjustable trigger feature
  • pre-drilled screw holes to ensure precise framework positioning
  • compatibility with M140 springs

Numerous reinforced internal components are integrated into the gearbox, including 8-millimeter plain bearings, steel gears, a polycarbonate piston with a full steel rack, a Type 2 cylinder, as well as a steel interrupter and a sealed aluminum nozzle.

Gate X-ASR Electronic System

In its standard configuration, the carbine comes equipped with a MOSFET X-ASR system from Polish manufacturer GATE. This system enhances protection for the replica’s components, delivers improved trigger response, and increases the lifespan of both the electronics and battery. Additionally, thanks to integrated signal LEDs, it enables the execution of basic internal malfunction diagnostics. The replica is designed for battery connection via a Deans/T-Connect plug.

Set elements

  • Specna Arms SA-F13 Flex Gate X-ASR Gen.2 AEG Assault Carbine - Black
  • S-Mag Hi-Cap magazine
  • Gate X-ASR diagnostic card
  • spare M90 main spring
  • adapter from small tamiya to t-deans
  • cleaning rod
  • vertical tactical grip

Main features

  • Constructed from metal and plastic components
  • Equipped with a Specna Arms Aether gearbox
  • Features a TDC Magnuus rotary Hop-Up chamber
  • Integrated Hop-Up Helium Flat Hop eraser for enhanced accuracy
  • Fitted with a 14mm CCW threaded muzzle
  • Includes a dorsal RIS rail for mounting tactical accessories
  • Comes with a Gate X-ASR electronic module
  • Utilizes an ESA quick-change spring system
  • Adjustable stock for customized comfort
  • Precision inner barrel for higher shooting accuracy
  • A vertical grip is provided in the package
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 390 fps
Accurate shot range Up to 40 m
Magazine type Hi-cap
Magazine capacity 300 6 mm caliber BBs
Gearbox Reinforced
Body Polymer
Overall length 780 mm
Weight 2460 g
Main color Black
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 5902543206893
Manufacturer code SPE-01-047374
Brand Specna Arms

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