KPYK SA-PJ15 PRIME Aster II ETU BLDC airsoft rifle

Specna Arms x KPYK SA-PJ15 PRIME™ Aster II ETU BLDC™ airsoft Carbine - Half-Tan

The SA-PJ15 PRIME™ Aster II ETU BLDC™ is the result of a strategic collaboration between Specna Arms and KPYK, combining durability, modern design, and practical functionality. Built largely from steel with carefully selected aluminum components, this airsoft carbine delivers robust field performance without compromising weight or handling. The handguard features a CRC 1U020 gas tube overlay from KPYK, while M-LOK mounts and a Picatinny rail enable rapid accessory integration—from red dots and lasers to vertical grips and tac torches. For players who demand reliability, precision, and a professional edge on the field, this rifle stands out in CQB, milsim, and outdoor skirmishes.

Key benefits include a resilient Nano Coating that resists scratches, a unique serial number on the barrel for traceability, and a 24mm CW discharge thread for easy upgrades. An ergonomic, adjustable stock and a generous storage area under the breech cover support extended play with stick-type batteries. This is a true workhorse built for rough environments and long games, with features designed to improve accuracy, consistency, and overall performance.

Inside, the SA-PJ15 PRIME™ houses premium components such as:

• 8mm J-Cage bearings for motor and piston pinion, plus 8mm plain bearings for the center pinion
• Steel cylinder and a precision 6.02mm inner barrel
• CNC steel gears with a 16:1 ratio
• Reinforced piston with a steel jaw
• Rotating TDC Magnus™ Hop-Up chamber for precise adjustment
• Helium™ Flat Hop eraser to enhance shot stability
• Aluminum head and nozzle, plus two extra springs (M90 and M135)
• High-speed Specna Arms DarkMatter™ motor, 27–35K brushless (BLDC)
• Built-in Gate Aster II electronic system

The GATE ASTER II system brings smart control to the field: Bluetooth 5.2 connectivity, replica telemetry, and compatibility with both brushless and brushed motors. It offers pre-cocking, de-cocking, sniper mode, active braking, low battery warnings, and extended cycle life for springs and gears. The integration of Enter & Convert™ makes maintenance and tuning straightforward, ensuring dependable performance from first pull to last round.

Engineer-grade construction meets practical field needs. The rifle features an all-steel core in critical areas, a fiber-proof Nano Coating for scratch resistance, and a side dovetail rail for versatile optics mounting. The stock is fully adjustable for individual shooter ergonomics, and the included M-LOK handguard allows flexible accessory layouts. For those seeking upgrade options, explore compatible items in our tactical gear and airsoft BB collections. For power options and spare parts, check our batteries and chargers and airsoft rifles catalogs. You can also discover more from the Specna Arms family in our Specna Arms page

Specna Arms is renowned for pushing the boundaries of realism, durability, and reliability in European markets, and this collaboration with KPYK continues that tradition with advanced ETU control and high-performance BLDC power.

Brand	Specna Arms x KPYK
Model	SA-PJ15 PRIME™ Aster II ETU BLDC
Type	Electric AEG Carbine
Material (core)	Steel components with aluminum and polymer parts
Inner Barrel	6.02 mm precision
Gearbox	8 mm bearings, CNC steel gears 16:1
Motor	Specna Arms DarkMatter High Speed 27–35K brushless
Hop-Up	Rotating TDC Magnus™ with Helium Flat Hop eraser
ETU	Gate Aster II with Bluetooth 5.2, sniper mode, active brake
Special Features	Nano Coating, 24 mm CW thread, adjustable stock, space for stick battery
Rails	M-LOK mounts + Picatinny rail
Spring Change	Enter & Convert™ quick spring change system
Color	Half-Tan
Included Extras	Two additional springs (M90, M135)