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Specna Arms RRA SA-P04 Prime HAL ETU AEG Dark Matter High Speed 27k Assault Carbine - Black

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€354.26

Specna Arms RRA SA-P04 Prime HAL ETU AEG Dark Matter High Speed 27k Assault Carbine - Black

Electric replica of the Prime series assault rifle, engineered so that its default internal configuration and overall performance rival those of custom-upgraded models. Outfitted with the innovative Specna Arms Æther gearbox and the advanced Specna Arms Magnus rotary Hop-Up TDC chamber. Each unit comes with an individual serial number, which is additionally authenticated by a hologram.

durable construction, folding sighting devices and 14 mm CCW thread

Constructed from a blend of durable metal, steel, and plastic, the replica boasts a robust design. A layer of Nano Coating shields the body from scratches. Outfitted with a precision steel inner barrel measuring 6.02 mm in diameter, the model achieves excellent accuracy and consistent shot placement, and features folding sighting devices. The outer barrel incorporates a 14 mm CCW thread, making it compatible with an extensive selection of muzzle attachments and suppressors.

ESA2 quick-change spring system, Hop-Up tdc chamber

The upgraded ESA2 quick-change spring system enables rapid and efficient adjustments to the replica's power to meet field requirements, all without needing specialized tools or a workshop. Featuring a M90 mainspring included in the package, the replica is also well-suited for indoor scenarios. Outfitted with the newest TDC Magnus (Top Down Center) rotary Hop-Up chamber, the model delivers consistent and precise hop-up adjustment. Enhanced by the Helium Flat Hop Eraser, shot BBs benefit from improved undercurrent stability.

Specna Arms Æther gearbox and its components

At the heart of the replica lies the Specna Arms Æther (v2) gearbox, featuring a reinforced shell, enabling the model to propel BBs at a velocity of 370 FPS. The gearbox includes the following:

  • Anti-Reversal release port
  • Pre-cocking windows and AoE inspection ports
  • Enhanced reinforcement in high-stress zones
  • Inspection port for the motor’s pinion
  • Adjustable trigger mechanism
  • Screw points to secure framework alignment
  • A reinforced polymer piston equipped with a full steel rack
  • Aluminum cylinder head and nozzle
  • Steel-made cylinder
  • Spring guide constructed from bearing-grade steel
  • Set of CNC-machined steel gears with a 16:1 gear ratio
  • 8mm J-Cage ball bearings (for both engine and piston pinion)
  • Trigger blade designed by Mancraft
  • Specna Arms Dark Matter High Speed 27k brushless motor
  • HAL ETU Module in its factory configuration

Dark Matter High Speed 27k Brushless Motor

The replica comes configured by default with a premium Dark Matter High Speed 27k brushless motor, delivering increased power, fast firing rates, enhanced reliability, and superior performance. Engineered to operate with extremely strong springs (up to M190), the motor provides substantial high torque output (up to 27,000 RPM).

Key advantages of the Dark Matter High Speed 27k brushless motor include:

  • high torque
  • enhanced trigger response and a high TPA coefficient
  • significantly quieter operation
  • aluminum housing precision-crafted on CNC machines
  • lower power usage and reduced battery strain for increased performance
  • extended lifespan with minimized component wear

hal etu module

Equipped with a cutting-edge HAL ETU module, the model offers the following advanced features:

  • magnetic sensor and Hall effect-based trigger detection
  • integrated active braking system
  • binary trigger capability
  • trigger sensitivity adjustable across 5 levels (ranging from 20% to 100%)
  • pre-cocking settings adjustable on 6 different levels
  • AUTO firing modes configurable to Full Auto, Semi, 3-round Burst, or 5-round Burst
  • SEMI firing modes programmable to Semi, Binary, AUG, or Sniper
  • convenient programming directly via the trigger
  • integrated low battery warning

set elements

  • Specna Arms RRA SA-P04 Prime AEG HAL ETU Dark Matter High Speed 27k assault rifle
  • M135 spare spring
  • Spare M90 spring
  • Adapter from small Tamiya to T-Deans
  • BBs speedloader
  • User manual

main features

  • Robust build quality
  • Equipped with the Specna Arms Æther gearbox
  • Features the Specna Arms Magnus rotary Hop-Up TDC chamber system
  • Marked with an individual serial number
  • Protected by a nano coating
  • Fitted with a 14mm CCW threaded barrel
  • Includes foldable aiming sights
  • Utilizes a Helium Flat Hop eraser
  • Integrated HAL ETU module
  • Outfitted with the ESA2 rapid spring change system
  • Set comes with included tactical accessories

technical data

Shade: Black
Composition: plastic, metal, steel
Power source: electric drive
Gearbox model: Specna Arms Æther (v2)
Muzzle velocity: 370 FPS
Hop-Up: present, adjustable
Magazine style: mid-cap
Magazine hold: 125 BBs
Internal barrel size: 275 mm
Barrel threading type: 14 mm CCW
Connector standard: DEANS / T-connect
Overall length: 695 - 780 mm
Net weight: 2800 g
Producer: Specna Arms, PRC

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 370 fps
Accurate shot range Up to 30 m
Magazine type Mid-Cap
Magazine capacity 125
Gearbox Custom
Body Metal
Overall length 780 mm
Weight 2800 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 5902543920379
Manufacturer code SPE-01-042284
Brand Specna Arms

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