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Specna Arms SA-PH21 Prime Aster II ETU AEG Assault Carbine - Chaos Bronze

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€448.58
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€448.58

Specna Arms SA-PH21 Prime Aster II ETU AEG Assault Carbine - Chaos Bronze

The SA-PH21 assault carbine electric replica from the PRIME series features a Dark Matter High Speed 27k brushless motor by Specna Arms and includes a Gate Aster II Bluetooth control module, enabling advanced customization of the replica's settings.

Nano Coated, Helium Flat Hop rubber

The receiver, outer barrel, and flask guide are constructed from steel. Additionally, all screws and pins are also made of steel. The grips, both vertical and pistol, as well as the flask and stock, are crafted from durable plastic and aluminum. The barrel features an anti-scratch Nano Coating for enhanced protection.

The Helium Flat Hop eraser enhances BB stability during firing, ensuring superior accuracy and shot consistency.

Dorsal RIS rail, sighting devices

The 22mm dorsal RIS rail enables the attachment of various optoelectronic accessories. In standard configuration, mechanical sighting devices, including a front sight and a peep sight, are included. The length of the replica can be tailored to the user's build and preferences, owing to an adjustable stock finished with a non-slip butt plate. Included in the set are two S-MAG-type polymer mid-cap magazines, each accommodating 125 BBs.

Precision barrel, rotating Hop-Up chamber

Configured in its default setup, the model features a TDC Magnus rotary Hop-Up chamber along with a 6.02mm precision steel barrel. The outer barrel concludes with a standard flash hider, fitted onto a 14-mm left-hand thread, making it compatible for attaching a sound suppressor as an alternative.

Gate Aster II Bluetooth module

The model features a Gate Aster II Bluetooth control unit equipped with a Quantum Trigger 2, providing access to a variety of replica settings and customization options, and ensuring compatibility with both brushed and brushless motors. The Aster II incorporates a built-in fuse designed to safeguard the battery, gearbox, motor, and electronics. Manufactured to military standard MIL-V-173C, the module is protected against unfavorable weather conditions. Key features of the Gate Aster II include:

  • Quantum Trigger 2 with adjustable sensitivity
  • binary trigger functionality
  • battery over-discharge protection
  • Pre-cocking function for enhanced trigger response
  • Active Break ensures the replica completes a full cycle with every shot, preventing gearbox overload from partial cycles
  • Sniper mode enables a delay to replicate reloading or recoil
  • Bluetooth connectivity for seamless integration with a smartphone app

Specna Arms Aether Gearbox

At the heart of the replica lies the V2 gearbox, built on the reinforced Specna Arms Aether chassis, featuring:

  • main spring release system
  • inspection ports for simplified pre-cocking and AoE tuning
  • strengthened framework front section
  • inspection openings to assist with the arming procedure
  • adjustable trigger pull length

Premium internal components include:

  • reinforced polymer piston with a full steel rack
  • aluminum pneumatic assembly
  • bearing-mounted spring guide to ensure smoother performance
  • set of CNC-machined steel gears with a 16:1 gear ratio
  • J-Cage 8mm ball bearings (for motor and piston gear) and 8mm plain bearings (for bevel gear)
  • SolarTrigger trigger blade from GATE
  • Specna Arms Dark Matter High Speed 27k brushless motor for maximum efficiency
  • Gate ASTER II Bluetooth ETU module pre-installed with factory settings

Dark Matter High Speed 27k Brushless Motor

In its default configuration, the replica is fitted with a premium Dark Matter High Speed 27k brushless motor, delivering enhanced power, fast firing speed, reliability, and superior performance. Engineered to operate with extremely strong springs (up to M190), the motor offers exceptional torque (reaching approximately 27000 RPM).

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

  • high torque
  • superior trigger response and a high TPA coefficient
  • significantly quieter operation
  • CNC-machined aluminum housing
  • lower power consumption and battery strain, resulting in enhanced performance
  • extended lifespan with reduced component wear

450 FPS

In its standard configuration, the replica achieves an exit velocity of 450 FPS. Featuring an upgraded, tool-free ESA 2 quick-change spring system, the design enables rapid adjustment of the replica’s power to suit various types of gameplay. The package also includes both an M90 and an M135 spring.

Set elements

  • Specna Arms SA-PH21 Prime Aster II ETU AEG assault rifle - Chaos Bronze
  • 2 x S-MAG mid-capacity magazines
  • M135 spare spring
  • notch sight
  • small Tamiya to T-Deans adapter
  • BB speedloader
  • extra M90 spring
  • vertical foregrip

Main features

  • Nano Coating finish
  • M-LOK system compatible handguard
  • 6.02 mm precision inner barrel
  • Rotary Hop-Up TDC Magnus chamber design
  • Reinforced V2 Aether gearbox structure
  • ESA 2 rapid spring change mechanism
  • 450 fps velocity at discharge
  • Aster II Bluetooth system integration
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 450 fps
Magazine type Mid-Cap
Magazine capacity 125 6 mm caliber BBs
Gearbox Reinforced
Overall length 89 cm
Weight 3290 g
Optics ready Yes
Fixed sighting devices Yes
Additional accessories included Yes
Accessory rail Yes
Hop-up Yes, adjustable
Plug type Deans/T-Connect
EAN 5902543892607
Manufacturer code SPE-01-044131
Brand Specna Arms

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