RRA SA-P04 PRIME Aster II ETU BLDC airsoft rifle

Introducing the Specna Arms RRA SA-P04 PRIME™ Aster II ETU BLDC™ airsoft carbine — a flagship from Specna Arms Prime, built for players who demand peak performance straight from the box. The Prime line blends the trusted EDGE™ platform with new internal parts, delivering reliability, precision, and advanced control on every ride to the field. This model stands out as one of the first replicas to integrate a brushless motor in the stock, unlocking noticeably improved torque, speed, and efficiency right away.

Key features and benefits designed for real-world play:

• BLDC power in the stock — the powerful Dark Matter™ High Speed 27-35k brushless motor delivers high torque and consistent shot cycles, ideal for fast CQB exchanges and milsim skirmishes.
• Ather™ Gearbox — a reinforced, precision-engineered gearbox with pre-cocking, AoE inspection windows, and screw holes for frame alignment. Ready for high-performance springs and future upgrades.
• TDC Magnus™ Hop-Up — Top Down Center rotation offers highly accurate, stable adjustment for consistent groupings at various engagement distances (covered by European Patent).
• Helium™ Flat Hop rubber — enhances ball stability and spin consistency, improving accuracy across the full range of BB weights.
• 15+ premium internal components — CNC gears, 8mm J-Cage bearings, reinforced polymer piston with steel jaw, aluminum pneumatic assembly, and more for durable, repeatable performance.
• Nano Coating finish — resists scratches to keep the exterior looking and feeling pristine under field conditions.
• 14mm CCW external barrel — compatible with standard suppressors and muzzle devices, increasing versatility for different field rules.
• M90 and M135 springs included — expands upgrade options, with ready compatibility for M140 springs when you’re ready to push performance further.
• Gate ASTER II Bluetooth® ETU Module — factory-fitted for telematics, settings access via app, and compatibility with both brushless and brushed motors. Built to MIL-V-173C weather resistance for rugged European conditions.
• Serial numbers and security — individual serial number on the barrel, authenticated by a hologram for authenticity and traceability.

The SA-P04 PRIME Aster II is designed for serious airsoft players who want field-ready capability with the flexibility to tune performance. It ships with features that typically require aftermarket work, reducing setup time and increasing reliability on day one. Explore more premium builds from Evolution Airsoft and see how Specna Arms Prime compares with other premium lines, or browse our broader airsoft rifles collection to find complementary platforms for your loadout.

For those building a complete, field-ready setup, consider pairing this carbine with components from our batteries and chargers and airsoft BBs ranges. The RRA SA-P04 PRIME™ integrates smoothly with compatible upgrades and accessories to keep you competitive in CQB, milsim, and outdoor fields.

Specifications

Model	Specna Arms RRA SA-P04 PRIME™ Aster II ETU BLDC™ Carbine
Gearbox	Ather™ reinforced gearbox with pre-cocking and AoE inspection windows
Motor	Specna Arms Dark Matter™ High Speed 27-35k brushless motor
Hop-Up	TDC Magnus™ rotating chamber with Helium Flat Hop
Inner Barrel	6.02mm precision steel inner barrel
Barrel Thread	External 14mm CCW
ETU Module	Gate ASTER II Bluetooth® ETU, weatherized, binary trigger compatibility
Spring Compatibility	Ready for M140; includes M90 and M135 springs
Additional Features	Nano Coating, individual serial with hologram, reinforced front, premium components
Brand	Specna Arms

Meta description: Specna Arms RRA SA-P04 PRIME Aster II ETU BLDC carbine — premium Prime line, BLDC stock motor, Ather Gearbox, TDC Magnus Hop-Up for field-ready accuracy.