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Specna Arms SA-P21 PRIME Aster II ETU AEG Assault Carbine - Chaos Bronze

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€424.95
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€424.95

Specna Arms SA-P21 PRIME Aster II ETU AEG Assault Carbine - Chaos Bronze

Electric model of the SA-P21 assault carbine from the PRIME series, featuring a free-float handguard with the M-LOK system, powered by a Specna Arms Dark Matter High Speed 27k brushless motor and integrated with a Gate Aster II Bluetooth control module for advanced customization of replica functions.

Metal body, Nano Coating

The main body, fore grip, outer barrel, and receiver extension are constructed from metal, while all screws and pins are made from steel for enhanced durability. The pistol grip, vertical grip, stock, and magazines utilize tough plastic materials. The exterior of the body features an anti-scratch Nano Coating for increased resilience. Authentic Specna Arms manufacturer’s markings are engraved on the replica, and every unit is assigned an individual serial number that is authenticated with a hologram.

A 22 mm top RIS rail allows for the attachment of a wide range of optoelectronic accessories. Standard configuration includes mechanical, adjustable flip-up sights comprising both a peep and a bow sight. For additional tactical upgrades, the rifle is equipped with a free-float M-LOK handguard featuring a mounted vertical foregrip. The adjustable length of the replica can be set to the shooter’s build and preference thanks to an extendable butt plate finished with a non-slip textured stock. The package is supplied with two S-MAG-type polymer Mid-Cap magazines, each with a capacity of 125 BBs.

Precision barrel, Hop-Up chamber TDC Magnus

In its standard configuration, the SA-P21 comes equipped with a TDC Magnus rotary Hop-Up chamber alongside a 6.02mm precision steel barrel. The outer barrel is finished with a standard flash hider, mounted on a 14-millimeter left-hand thread, which makes it possible to install a sound suppressor as an alternative.

Gearbox Specna Arms Aether

At the heart of the replica lies a V2 gearbox crafted on a reinforced Specna Arms Aether chassis, fitted with:

  • mainspring release mechanism
  • pre-cocking and AoE inspection ports
  • reinforced front section of the chassis
  • inspection ports for straightforward cocking
  • trigger adjustment capability

Internally, features include:

  • reinforced polymer piston with a full steel rack
  • aluminum piston head and cylinder head
  • bearing-mounted spring guide
  • CNC-machined steel gear set with a 16:1 gear ratio
  • 8mm J-Cage ball bearings (for motor and piston pinion)
  • 8 mm plain bearings (for center pinion), SolarTrigger trigger blade
  • Specna Arms Dark Matter High Speed 27k brushless motor

Dark Matter High Speed 27k brushless motor

The replica is outfitted by default with a premium Dark Matter High Speed 27k brushless motor, delivering increased power, fast firing rates, dependable operation, and superior performance. Engineered to function with extremely strong springs (up to M190), the motor offers high torque (approximately 27,000 RPM).

The Dark Matter High Speed 27k brushless motor offers:

  • exceptional torque
  • enhanced trigger response and a high TPA rating
  • significantly quieter function
  • CNC-machined aluminum housing
  • lower energy consumption and reduced battery strain for enhanced performance
  • extended lifespan and minimized component wear

Gate Aster II Bluetooth control module

The SA-P21 variant comes equipped with the Gate Aster II Bluetooth control system, featuring an integrated SolarTrigger, enabling advanced configuration and fine-tuning of the replica, as well as compatibility with both brush and brushless motors. The Aster II incorporates a built-in fuse designed to safeguard the battery, gearbox, motor, and electronic controls. Engineered in accordance with military standard MIL-V-173C, the system is protected against challenging environmental conditions.

Key features of the Gate Aster II system:

  • Adjustable sensitivity on the SolarTrigger
  • Binary trigger functionality
  • Battery over-discharge protection
  • Pre-cocking function for enhanced trigger response speed
  • Active Break ensures a complete cycle with every shot, preventing partial cycle overloads in the gearbox
  • Sniper mode introduces a delay to simulate reloading or recoil for precision shooting
  • Bluetooth pairing for direct control and customization via mobile application

ESA 2 quick-change spring system

Under standard configuration, the replica achieves a muzzle velocity of 380 FPS. Featuring an upgraded ESA 2 quick-change spring system that requires no tools, the replica allows for effortless adjustment of performance to suit various gameplay scenarios. The package also includes additional M90 and M135 springs.

Main features

  • Enhanced surface protection with nano coating
  • M-LOK system handguard for superior modularity
  • 6.02 mm precision barrel ensures high accuracy
  • TDC Magnus rotary Hop-Up chamber for optimized trajectory control
  • Sturdy V2 Aether reinforced gearbox
  • Integrated Gate Aster II Bluetooth module for advanced electronic management
  • Equipped with ESA 2 quick-change spring system for fast power adjustments

Set elements

  • Specna Arms SA-P21 PRIME Aster II ETU AEG assault carbine - Chaos Bronze finish
  • Set includes 2x S-mag mid-cap magazines for optimal ammunition management
  • Comes with an extra M90 spring
  • Includes an additional M135 spring for enhanced customization
  • Equipped with a speedloader for quick magazine refills
  • Features a small Tamiya to T-Deans adapter for versatile battery connection
  • Supplied with a vertical grip for improved weapon handling

Technical data

Shade: Chaos Bronze
Composition: metal, ZnAl, plastic
Barrel size: 210 mm
Total length: 630 - 710 mm
Power source: electric
Gearbox type: v2
Muzzle velocity: 380 FPS
Hop-Up system: adjustable
Magazine style: Mid-Cap
Magazine capacity: 125 BBs
Weight: 2375 g
Produced by: Specna Arms

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 380 fps
Accurate shot range Up to 40 m
Magazine type Mid-Cap
Magazine capacity 125 6 mm caliber BBs
Gearbox Reinforced
Body Metal
Overall length 710 mm
Weight 2375 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 5902543887542
Manufacturer code SPE-01-043643-00
Brand Specna Arms

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