Replica Airsoft M4 Prime RRA SA-P29 ASTER II Brushless (Specna Arms)

The BLDC™ (Brushless Direct Current) motor is a DC motor in which the traditional brushes—typically responsible for current transmission—have been eliminated.
No sparking
Longer lifespan (no parts subject to wear)
Stable performance even at high speeds
High energy efficiency
Quiet operation
Low heat generation
Immediate trigger response
High torque from the start
Allows for the use of stronger springs without loss of performance or RPM

Specna Arms presents a line of airsoft rifles built on years of experience, passion, and commitment: the Specna Arms Prime series—a combination of well-known models from the EDGE™ line with entirely new internal components.

A standout feature of the Specna Arms Prime series is the inclusion of a brushless motor—the Specna Arms Dark Matter™—making it the first series of replicas on the market to feature such a motor. Furthermore, the Prime series incorporates a new type of gearbox, the Specna Arms Æther™, as well as Specna Arms’ latest rotary-style TDC (Top-Down Center) hop-up chamber, the Magnus™.
These features, among others, make the Specna Arms Prime an attractive choice for airsoft players seeking a replica that delivers high-level performance and quality right out of the box, without the need for additional investment in upgrades.

Replica features:
- Nano Coating finish on the receiver to prevent scratches
- Individual serial number on the barrel, verified by a hologram
- QD-style pistol grip
- Outer barrel with 14mm CCW (counter-clockwise) threading
- Precision steel inner barrel with a 6.02mm diameter, ensuring high accuracy precision and shot-to-shot repeatability
- Magnus™ TDC (Top Down Center) rotary Hop-Up chamber for highly precise and stable adjustment (covered by European patent number 015052069-0001)
- Helium™ Flat Hop bucking to improve BB flight stability
- Enhanced ESA2™ quick-spring-change system, allowing for spring replacement without special tools (covered by European patent number 007422159-0001)
- Additional M90 and M135 springs
- Æther™ Gearbox – a reinforced shell (covered by European patent number 015044865-0001) featuring:

main spring release function
pre-cocking and AoE (Angle of Engagement) inspection windows
reinforced front section
inspection windows for easier shimming
trigger adjustment function
screw holes for shell alignment
Ready for use with M140 springs

Internal components include:
reinforced polymer piston with a steel rack
aluminum pneumatic assembly
bearing-mounted spring guide
CNC-machined steel gear set with a 16:1 ratio
8mm J-Cage ball bearings (on the sector and motor gears) and an 8mm solid bushing (on the center gear)
GATE SolarTrigger™
powerful Specna Arms Dark Matter™ High Speed ​​27-35k brushless motor
factory-installed GATE™ ASTER II Bluetooth® ETU (Electronic Trigger Unit)

The ASTER II module features Bluetooth® connectivity, allowing access to replica settings and telemetry data via the dedicated app. It is equipped with cutting-edge technological solutions that allow for the customization of the replica according to the user's needs, while supporting both brushed and brushless motors. The Aster II features an integrated fuse designed to protect the battery, gearbox, motor, and controllers. It is manufactured in accordance with the MIL-V-173C military standard, providing protection against adverse weather conditions.
Aster II Bluetooth® features:

- Binary trigger
- Motor and battery protection
- Compatible with brushless motors
- Adjustable pre-cocking
- Active brake
- Low battery warning
- Sniper mode
- Bluetooth connection to the app

The box includes:
2 x S-MAG mid-cap magazines
Additional M135 spring
Cleaning rod
Replica
Small Tamiya to Deans adapter
BB speed loader
Additional M90 spring
Not included:
The kit does not include a battery or a battery charger.
Note: To avoid potential malfunctions, we recommend using a 7.4V battery when using an M90 spring.