KPYK SA-PJ14 PRIME Aster II ETU BLDC airsoft rifle

Specna Arms x KPYK SA-PJ14 PRIME™ Aster II ETU BLDC™ airsoft Carbine

Introducing a high-performance collaboration between Specna Arms and KPYK. The SA-PJ14 PRIME™ Aster II integrates premium materials, precision engineering, and advanced electronics to deliver field-ready reliability straight out of the box. Built to excel in airsoft fields, CQB scenarios, and milsim operations, this carbine combines durability, accuracy, and modular versatility for real-world use.

The Prime™ J-Series line represents a seamless fusion of rugged construction and refined internals. Its body features extensive steel components for strength, with aluminum sighting devices and handguard overlays to save weight without compromising rigidity. A Nano Coating protects against scratches, while an individual serial number on the barrel adds an extra layer of authenticity and traceability.

Key design elements and benefits include:

• Durable construction — steel barrel, breech cover, outer barrel, trigger guard, magazine catch, selector wing, QD mount on the butt, gas tube, and stock; aluminum sighting devices, discharge device, dovetail rail, and handguard overlay from KPYK for a balanced blend of strength and lightness.
• Advanced internals — 8mm ball bearings, steel cylinder, precision 6.02mm inner barrel, CNC steel gears (16:1), reinforced piston, and a rotating TDC Magnus Hop-Up chamber for highly stable accuracy.
• Efficient power and control — Specna Arms DarkMatter™ High Speed 27-35K brushless motor paired with the GATE Aster II electronic system, accessible via Bluetooth 5.2 for settings, telemetry, and tuning on the field.
• Ready-to-field performance — Enter & Convert™ compatible, 24mm CW muzzle device threading, space under the breech for a stick-type battery, and quick-spring-change support for rapid matching to field game modes.
• Versatility and upgrades — M-LOK mounts and a Picatinny rail allow effortless accessory integration (red dot sights, lasers, vertical grips, flashlights, etc.).
• Out-of-the-box reliability — tuned internals, high build quality, and the combination of steel and aluminum components ensure consistent performance on the most demanding airsoft soils and CQB environments.

Designed for players who demand premium touchpoints and battlefield practicality, this collaboration leverages the strengths of Specna Arms' experience with KPYK's detailed hardware overlays. The result is a high-performance carbine that performs at the top of its class while remaining flexible for a wide range of play styles. Explore more from the broader family in the following collections: airsoft rifles and tactical gear. You can also browse related brand lines in Specna Arms and Evolution Airsoft for complementary setups. For batteries and charging needs, check batteries and chargers, and for BBs, visit airsoft BB.

Highlights for field use

• Excellent close-quarters performance with compact carbine footprint
• Accurate, stable fire thanks to Magnus Hop-Up and precise inner barrel
• Highly upgrade-friendly platform with flexible accessory mounting
• Bluetooth-enabled tuning and telemetry via GATE Aster II

Caliber	6mm BB
Barrel inner diameter	6.02 mm
Barrel length	Precision inner barrel integrated into the gearbox system
Gearbox	8mm, CNC steel gears, 16:1 ratio
Motor	Specna Arms DarkMatter High Speed 27-35K brushless
Hop-Up	Rotating Magnus TDC Hop-Up chamber
Electronic system	GATE Aster II with Bluetooth 5.2
Battery space	Under breech area accommodates stick-type batteries
Stock	Adjustable tactical stock
Rail system	M-LOK handguard with Picatinny top rail
Threading	24mm CW muzzle device
Included springs	2 additional springs (M90, M135)
Finish	Nano Coating for scratch resistance