KPYK SA-PJ12 PRIME Aster ETU BLDC

Specna Arms x KPYK SA-PJ12 PRIME Aster ETU BLDC Airsoft Carbine

The SA-PJ12 PRIME™ Aster ETU BLDC™ is a cutting-edge collaboration between Specna Arms and the Ukrainian engineering team at KPYK. Built for demanding field play, this next-generation J-Series PRIME™ carbine delivers exceptional durability, top-tier ergonomics, and out-of-the-box performance with no tuning required.

Premium Construction

Robust steel externals provide authentic weight, field durability, and a professional finish. Key steel components include the barrel, breech chamber cover, trigger guard, selector, magazine catch, gas tube, folding stock, and more. The receiver features a Nano Coating surface to resist scratches during intense use.

• KPYK CRC 1U004 gas tube cover for rugged reliability
• Modern CNC-machined handguard with integrated M-LOK slots
• Picatinny top rail for reliable optic mounting

PRIME Internal Performance

The PRIME™ line represents Specna Arms at the peak of internal engineering. The SA-PJ12 is equipped with elite components designed for reliability, speed, and precision straight out of the box:

• GATE ASTER V3 advanced programmable ETU with high trigger sensitivity
• DarkMatter High-Speed BLDC Motor 27–35K for explosive acceleration
• Magnus TDC Hop-Up Chamber with Helium Flat Hop Eraser for exceptional accuracy
• Steel 16:1 CNC gears on 8mm bearings for smooth, durable operation
• 6.02 mm precision inner barrel for stable BB trajectory
• ESA2 Quick Spring Change system for rapid field tuning
• Reinforced piston with steel rack for longevity under high-speed operation
• Steel cylinder + aluminium heads + aluminium nozzle for a perfect air seal
• Includes M90 and M135 springs; factory configuration optimized for reliable daily operation

GATE ASTER V3 – Advanced Electronics

The integrated ASTER V3 system delivers elite-level control, safety, and responsiveness:

• Auto pre-cocking and enhanced cycle detection
• Unlimited trigger sensitivity adjustment
• Trigger programming via selector
• Adaptive / 100% / 60% / Brushless / OFF active brake modes
• Reverse polarity protection and multi-layer PCB durability
• Compatible with Blu-Link / USB-Link for advanced configuration
• Lowest standby consumption on the market (0.29 mA)

Ready for Any Mission

Designed to excel in Milsim realism and high-level competition, the SA-PJ12 PRIME™ offers:

• Space for a stick-type battery under the breech cover
• Folding steel stock for compact transport and stability
• Dovetail side rail for eastern-style optics
• Rugged steel construction for field durability

Discover how this rifle performs in real-world scenarios at the airsoft field or CQB arena. For broader options, explore our airsoft rifles collection

Specifications

Model	SA-PJ12 PRIME Aster ETU BLDC Carbine
Manufacturer	Specna Arms x KPYK
Internal Electronics	GATE ASTER V3 ETU; Blu-Link / USB-Link ready
Motor	DarkMatter High-Speed BLDC 27–35K
Gear System	Steel 16:1 CNC gears on 8mm bearings
Barrel	6.02 mm precision inner barrel
Spring System	ESA2 Quick Spring Change; M90/M135 springs included
Exterior	Steel externals; Nano Coating receiver
Stock	Folding steel stock
Rail System	M-LOK handguard; Picatinny top rail
Battery	Space for stick-type battery under breech cover

Brand	Specna Arms x KPYK
Model	SA-PJ12 PRIME™
Series	PRIME™ J-Series
Construction	Steel, aluminium, polymer
Hop-Up	Magnus™ TDC + Helium™ Flat Hop
Inner Barrel	6.02 mm precision
Motor	DarkMatter™ BLDC High Speed 27–35K
Gear Ratio	16:1 CNC steel gears
Bearings	8mm J-Cage + slide bearing
Electronics	GATE ASTER V3 ETU
Quick Spring Change	ESA2™ System
Magazine Type	Mid-cap S-MAG
Included Magazines	2 × S-MAG
Additional Springs	M90 + M135
Stock	Folding steel stock
Battery Connector	Small Tamiya (adapter to Deans included)
Battery / Charger	Not included