KPYK SA-PJ15 PRIME Aster II ETU BLDC airsoft rifle

Specna Arms x KPYK SA-PJ15 PRIME™ Aster II ETU BLDC™ Airsoft Carbine Olive

The Specna Arms x KPYK SA-PJ15 PRIME™ Aster II ETU BLDC™ is the product of a high-profile collaboration between Specna Arms and KPYK, bringing together rugged Ukrainian design with German-engineered precision. Built for serious field performance, this carbine blends durability, modularity and advanced electronics to deliver consistent reliability on CQB, milsim, and outdoor skirmishes.

Designed with a steel-dominant construction in critical areas — including the barrel, lock chamber cover, external barrel, trigger guard, magazine catch, selector wing, QD mount on the butt, gas tube, and stock extractor — this platform is built to withstand the rigors of intense skirmishes. Aluminum components cover the sighting devices, discharge device, dovetail mount, reload handle slide, stock guides, and the handguard with CRC 1U020 gas tube overlay for lightweight robustness. The combination yields a tough, stable platform that remains performant under stress.

The SA-PJ15 PRIME™ features M-LOK mounts and a Picatinny rail, enabling rapid accessory deployment — red dot sights, lasers, vertical grips, torches and more — to tailor the rifle for your preferred playstyle. The pistol grip, adjustable stock and mid-cap magazine are crafted from polymer for a comfortable, durable feel in extended battles.

• Nano Coating finish: Scratch-resistant body treatment via Specna Arms, preserving surface quality in harsh field conditions.
• Serialization and traditional styling: Individual serial number on the barrel adds an authentic touch and collector value.
• Threaded discharge device: 24mm CW thread for quick muzzle device changes and optimization of accuracy and performance.
• Side dovetail mounting rail: Extra rail space for optics canted to your preference and lighting tools.
• Under-breech battery space: Generous space for stick-type batteries under the breech cover for compact setups.
• Adjustable stock: Tactical stock with length adjustment to fit different shooter preferences and gearing setups.
• Battery and power: Power delivery is managed by the Gate Aster II system; designed to work with both brushed and brushless motors.

Inside the replica you’ll find a high-grade build and precision-engineered components designed for real-world reliability:

• 8mm J-Cage ball bearings (motor and piston pinion) and 8mm plain bearing (centre pinion) for smooth, long-lasting operation.
• Steel cylinder paired with a precision 6.02mm inner barrel for accurate, consistent shots.
• CNC steel gears with a 16:1 gear ratio for robust power delivery and smooth cycling.
• Reinforced piston with steel jaw to withstand high-stress cycles during rapid shooting.
• Rotating TDC Magnus Hop-Up chamber for fine, repeatable accuracy; Helium Flat Hop eraser enhances ball stabilization across a range of BB weights.
• Aluminum head and nozzle designed for reliability under rapid-fire conditions.
• Spring set included: M90 and M135 for quick horsepower adjustments and tuning.

Electronics and performance: The GATE ASTER II system brings advanced control and telemetry to this platform. Bluetooth 5.2 connectivity provides access to settings, replica telemetry and enhancements via smart devices, while compatibility covers both brush and brushless motors. Highlights include: - Active brake from 0 to 100% - Pre-cocking 0–5, de-cocking to extend spring and gear life - Sniper mode for precision shots at longer ranges - Low battery warning and efficient battery consumption (20 mA and 130 µA in low power mode) - Optional mechanical trigger lock and improved cycle detection for consistent performance

This carbine is designed for flexible field use, with plenty of space for a stick-type battery, and a compact profile that remains practical in CQB scenarios and longer MILSIM engagements. Its high-speed powerplant, blueprinted gearset and ETU-driven control provide dependable performance under pressure, giving you a decisive edge on the airsoft field.

For accessory compatibility and a broader selection of components, explore related ranges in our collections: Airsoft Rifles and Batteries & Chargers. You can also discover more from Specna Arms collection

Specifications