Specna Arms SA-PJ16 PRIME BLDC AK Airsoft AEG Rifle with DarkMatter Motor and GATE ASTER – Black

Specna Arms SA-PJ16 PRIME BLDC – AK Airsoft AEG Rifle, Black

Compact AK handling meets advanced brushless motor technology and programmable electronic control.

The Specna Arms SA-PJ16 PRIME BLDC is a premium electric airsoft rifle from the PRIME J-Series, combining the familiar AK platform with a modern adjustable stock and upgraded internal components.

Its main advantages include the DarkMatter High Speed 27–35K brushless motor, GATE ASTER electronic trigger unit, 16:1 CNC steel gears, 6.02 mm precision inner barrel and Magnus TDC Hop-Up system.

With an adjustable length of 745–825 mm, the SA-PJ16 offers a more compact configuration than full-length AK rifles while retaining a substantial metal construction.

DarkMatter High Speed Brushless Motor

The rifle features a Specna Arms DarkMatter 27–35K BLDC motor.

Brushless motor technology eliminates conventional carbon brushes, reducing brush-related wear and improving electrical efficiency.

Its benefits include fast trigger response, high torque, stable operation at higher rotational speeds and efficient battery usage.

The motor is designed to work with the reinforced drivetrain and programmable electronic control system.

GATE ASTER Electronic Trigger Unit

The GATE ASTER ETU provides electronic trigger detection and advanced motor control.

Supported features include:

• Adjustable trigger sensitivity

• Active braking

• Automatic pre-cocking

• Programmable trigger functions

• Improved cycle detection

• Reverse polarity protection

• Low-power sleep mode

• Diagnostics and firmware updates using compatible accessories

Advanced settings can be accessed through USB-Link or Blu-Link and the GATE Control Station (GCS) application.

Unlike GATE ASTER II, the supplied GATE ASTER is not described as having integrated Bluetooth connectivity. Wireless configuration requires a compatible external accessory.

Reinforced Version 3 Gearbox

The rifle is equipped with a Version 3 gearbox containing performance-oriented internal components:

• 16:1 CNC-machined steel gears

• 8 mm J-Cage ball bearings in selected positions

• 8 mm bushings in the remaining position

• Reinforced piston with steel teeth

• Steel cylinder

• Aluminium cylinder head and nozzle

These components are designed to work together with the DarkMatter brushless motor.

Magnus TDC Hop-Up and Helium Flat Hop

The Magnus rotary TDC Hop-Up chamber allows precise adjustment of BB backspin.

It is paired with a Helium Flat Hop bucking, designed to provide a consistent contact area and stable BB trajectory.

The system helps users fine-tune performance according to the BBs being used.

6.02 mm Precision Inner Barrel

The inner barrel measures 275 mm in length, with a diameter of 6.02 mm.

The shorter barrel contributes to the rifle's compact dimensions without automatically limiting its potential accuracy.

Enter & Convert Quick-Change Spring System

The Enter & Convert system makes main spring replacement easier without complete gearbox disassembly.

Additional M90 and M135 springs are supplied, allowing the rifle to be configured for different field requirements.

Always verify muzzle energy using a chronograph after changing springs.

Durable Steel, Aluminium and Polymer Construction

The SA-PJ16 uses a combination of steel, aluminium and polymer components.

Steel is used for several major external components, including the outer barrel, receiver cover, trigger guard, magazine catch and fire selector.

Aluminium is used for selected components, while the pistol grip, adjustable stock and magazines are polymer.

The rifle also features a Nano Coating finish designed to improve scratch resistance and an individual serial number.

Adjustable Tactical Stock

The tactical stock allows the overall length to be adjusted between 745 and 825 mm.

It also features QD sling attachment points for compatible sling hardware.

The compact design is practical when manoeuvring around obstacles or using the rifle with tactical equipment.

Optics and Muzzle Accessory Compatibility

The rifle includes an AK-style side dovetail rail for compatible optics mounts.

Its muzzle device is fitted to a 14 mm CCW thread, allowing compatible muzzle accessories to be installed.

Two 175-Round S-MAG Magazines

The package includes two S-MAG mid-cap magazines, each holding 175 BBs.

This provides a combined capacity of 350 BBs.

Performance and Applications

The supplier specifies a muzzle velocity of approximately 430 FPS, although actual performance depends on the installed spring and individual replica.

The SA-PJ16 is suitable for outdoor airsoft, MILSIM and other games where its muzzle energy complies with local field limits.

Its adjustable spring system also allows the rifle to be configured for lower-power environments when appropriately tuned.

Key Features

• Specna Arms SA-PJ16 PRIME BLDC

• AK-platform electric airsoft rifle

• DarkMatter High Speed 27–35K brushless motor

• GATE ASTER electronic trigger unit

• Version 3 gearbox

• 16:1 CNC steel gears

• 8 mm bearings and bushings

• Reinforced piston with steel teeth

• 6.02 mm / 275 mm precision barrel

• Magnus TDC rotary Hop-Up

• Helium Flat Hop bucking

• Enter & Convert quick-change spring system

• Steel, aluminium and polymer construction

• Nano Coating surface finish

• Individual serial number

• Adjustable tactical stock

• QD sling mounts

• AK-style side dovetail rail

• 14 mm CCW muzzle thread

• Two 175-round S-MAG mid-cap magazines

• Additional M90 and M135 springs

• Approximate muzzle velocity: 430 FPS

• Adjustable overall length: 745–825 mm

• Weight: 3330 g

• Black finish

Technical Specifications

Package Contents

• 1× Specna Arms SA-PJ16 PRIME BLDC – Black

• 2× S-MAG 175-round mid-cap magazines

• 1× additional M90 spring

• 1× additional M135 spring

• 1× Mini Tamiya to T-Deans adapter

• 1× BB speedloader

• 1× cleaning rod

Battery and charger are not included.

Battery Recommendations

The battery compartment is located beneath the receiver cover and is designed for a compatible stick-type battery.

The rifle uses a T-Deans connector.

When using the M90 spring, the supplier recommends a 7.4 V battery to reduce the risk of mechanical issues.

Why Choose the SA-PJ16 PRIME BLDC?

The Specna Arms SA-PJ16 PRIME BLDC combines a compact modern AK configuration with high-quality internal technology.

Its brushless DarkMatter motor, GATE ASTER electronics, CNC gears, Magnus TDC Hop-Up and quick-change spring system make it an attractive choice for players seeking a well-equipped AEG without immediately planning major internal upgrades.

Specna Arms SA-PJ16 PRIME BLDC – compact AK dimensions with premium performance-oriented engineering.