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Specna Arms SA-F12 Flex Gate X-ASR Gen.2 AEG Assault Carbine - Black

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€155.87
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€155.87

Specna Arms SA-F12 Flex Gate X-ASR Gen.2 AEG Assault Carbine - Black

A high-performance electric replica modeled after the second-generation Flex series assault carbine. Outfitted with a reinforced Aether gearbox and a precision rotating Hop-Up TDC Magnus chamber, the replica provides enhanced durability and accuracy. Standard configuration includes the advanced Gate X-ASR control system, giving operators the flexibility to adjust and personalize the replica's settings.

Durable construction, folding peep sight, accessory rails

Constructed using a combination of damage-resistant metal, steel, and plastic, the replica boasts exceptional durability. Key components such as the outer barrel, flash hider, charging handle, and controls are crafted from metal. Every screw and pin, along with the ejection port and mock bolt, utilize robust steel. The main body, handguard, pistol grip, and stock with receiver extension are produced from nylon fiber reinforced polymer. Specna Arms markings and a serial number have been precisely applied to the replica. Outfitted with a top-mounted 22 mm RIS rail, the model supports various optoelectronic accessory attachments. By default, it features a flip-up rear sight and a fixed front sight. Additional tactical equipment can be installed thanks to the included front RIS rail system.

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

Equipped with an adjustable SF-type stock, the replica allows for easy modification of its length to suit both the user's build and personal preferences. Enhanced grip is provided by a non-slip texture on the pistol grip and butt plate. A flash hider is installed on a standard 14mm left-hand thread.

Quick spring change system ESA, rotational Hop-Up chamber

Equipped with ESA's quick-change spring system, the replica enables fast and easy adjustment of performance to suit different styles of play. The package includes an M90 spring, allowing the default discharge velocity of 390 FPS to be reduced to approximately 300 FPS, making the replica optimized for CQB scenarios. Outfitted with a rotating TDC Magnus Hop-Up chamber combined with a Helium Flat Hop rubber band, the replica ensures excellent BB stability during firing. Precision shooting is enhanced by a 6.03 mm tightbore barrel.

Specna Arms Aether Gearbox

At the heart of the replica lies a V2 gearbox constructed on a reinforced Specna Arms Aether frame (protected by European Patent number: 015044865-0001), which comes equipped with the following features:

  • main spring release mechanism
  • pre-cocking function and AoE inspection windows
  • reinforced front section
  • inspection windows designed for easier shimming
  • trigger adjustment capability
  • pre-drilled holes for screws that enable precise frame alignment
  • adaptation for use with M140 springs

The gearbox includes several reinforced internal components such as 8-millimeter plain bearings, steel gears, and a polycarbonate piston featuring a full steel rack, Type 2 cylinder, steel interrupter, and a sealed aluminum nozzle.

Gate X-ASR electronic system

Delivered in its standard configuration, the carbine features a MOSFET X-ASR system from the Polish manufacturer GATE. This system safeguards internal components, improves trigger response, extends the life of electronics and batteries, and provides basic internal replica malfunction diagnostics via integrated signaling LEDs. The replica is equipped to connect a battery using a Deans/T-Connect plug.

Set elements

  • Specna Arms SA-F12 Flex Gate X-ASR Gen.2 AEG Assault Carbine - Black
  • S-Mag Hi-Capacity Magazine
  • Gate X-ASR Diagnostic Card
  • Spare M90 Main Spring
  • Vertical Foregrip
  • Small Tamiya to T-Deans Adapter
  • Cleaning Rod

Main features

  • Manufactured from a combination of metal and plastic components
  • Equipped with a Specna Arms Aether gearbox
  • Features a TDC Magnus rotational Hop-Up chamber
  • Outfitted with a Helium Flat Hop bucking
  • Fitted with a 14 mm CCW thread
  • Integrated RIS rails for attaching additional tactical equipment
  • Includes a Gate X-ASR electronic system
  • Utilizes the ESA quick spring change system
  • Comes with an adjustable stock
  • Vertical foregrip 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 890 mm
Weight 2540 g
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 5902543206879
Manufacturer code SPE-01-047372
Brand Specna Arms

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