【Specna Arms】SA-F04 FLEX ETU G2 BLDC AEG / 18+ (Late July 2026 Release - Pre-order)

Notice from the Manufacturer (Updated 2026/07/10)
Due to an unexpectedly high volume of orders, we may allocate products based on incoming stock.
Some customers may receive their orders in a second shipment.

Pre-orders for the popular "SPECNA ARMS" items have begun!

What is SPECNA ARMS? Features and Series Explanation

[FLEX Series]
An entry-level model specializing in lightness and maneuverability, featuring quick aiming and high handling performance.

The Flex ETU G2 BLDC series is an electric gun that combines practical equipment and high operating performance at an attractive price. It comes standard with the "HAL ETU™" optical sensor-controlled electronic trigger and the high-performance "Dark Matter™" brushless motor, achieving sharp response and stable operating performance.
Furthermore, it features a rotary TDC Magnus™ hop-up chamber, 8mm slide bearings + steel gears, and a quick-change spring system. With an M-LOK handguard and receiver made of nylon fiber reinforced polymer, it is lightweight and easy to handle, making it a well-balanced firearm suitable for a wide range of field uses right out of the box.

[Features]
・Dark Matter™ brushless motor standard equipment
・Electronic trigger control by HAL ETU
・Nylon fiber reinforced polymer M-LOK handguard
・6.03mm inner barrel
・Rotary TDC Magnus hop-up chamber
・16:1 CNC gear
・8mm slide bearing
・Equipped with quick-change spring system
・Full auto/burst/semi-auto compatible
・T-connector adopted
・Includes 2x 125-round spring magazines

■Product Specifications:
・Handguard type: M-LOK
・Inner barrel inner diameter: 6.03mm
・Inner barrel material: Brass
・Inner barrel length: 229mm
・Chamber type: Rotary TDC Magnus™
・Body size: 670mm～750mm
・Body weight: 2125g
・Equipped with quick spring change system
・Magazine type: 125-round spring magazine
・Handguard material: Nylon fiber reinforced polymer
・Receiver material: Nylon fiber reinforced polymer
・Barrel thread: 14mm counter-clockwise
・Internal specifications: 8mm slide bearings, steel gears, polycarbonate polymer piston
・Firing mode: Full auto / Adjusted burst / Semi auto
・Electronic trigger: HAL equipped
・Connector type: T-connector
・Compatible battery: EVO LiPo battery 7.4V/1200mAh stock tube in (T-connector)
・Motor: Dark Matter™
・Gearbox: Gearbox V2

With a rotary TDC Magnus™ hop-up chamber, 8mm slide bearings + steel gears, and a quick spring change system, both internal and external specifications prioritize practicality.
The M-LOK handguard and receiver, made of nylon fiber reinforced polymer, ensure lightness and ease of handling. It is a well-balanced firearm that can handle a wide range of field uses right out of the box.

■First Start-up Procedure
1. Set the selector to "SAFE."
2. Connect the battery. After connecting, it will beep "3 times." Approximately 3 seconds later, a "single high-pitched beep" will sound.
3. Hold the trigger down for approximately 5 seconds. If two high-pitched beeps sound, the setup is complete.

■Equipped with HAL ETU™ electronic control system
The trigger adopts "HAL ETU™," which performs electronic control with an optical sensor. It achieves both sharp, excellent response and stable operation feel.

[Main functions of HAL ETU™]
・Full auto / Semi auto / Configured burst firing
・Trigger sensitivity setting
・Pre-cocking setting
・Active braking setting

■Dark Matter™ Motor Equipped

By adopting the high-performance "Dark Matter™" brushless motor as standard, it achieves excellent performance with high torque and low power consumption.

■Specna Arms Electronic Trigger "HAL" Settings
To enter programming mode, quickly switch the selector switch from "AUTO" to "SEMI" twice and set it to "SEMI."
In programming mode, first select each setting item. If you pull the trigger once with the selector switch still on "SEMI," a beep will sound, allowing you to cycle through the setting items.

[Setting Items]
1 Beep - Full auto setting
2 Beeps - Semi auto setting
3 Beeps - Trigger setting
4 Beeps - Pre-cocking setting
5 Beeps - Active brake setting

With the desired setting item selected, switch the selector lever to "AUTO" to enter the detailed setting mode for that item.
Hold down the trigger for 3 seconds with the selector lever in the "AUTO" position to save the program settings.

[Details of Each Item]
・Full Auto Setting
1 Beep - Full auto
2 Beeps - Semi auto
3 Beeps - 3-round burst
4 Beeps - 5-round burst

・Semi Auto Setting
1 Beep - Semi-auto only
2 Beeps - Binary
3 Beeps - AUG mode
4 Beeps - Sniper mode

・Trigger Setting
1 Beep - 20%
2 Beeps - 40%
3 Beeps - 60%
4 Beeps - 80%
5 Beeps - 100%

・Pre-cocking Setting
1 Beep - LEVEL 1
2 Beeps - LEVEL 2
3 Beeps - LEVEL 3
4 Beeps - LEVEL 4
5 Beeps - LEVEL 5
6 Beeps - LEVEL 6

・Active Brake Setting
1 Beep - ON
2 Beeps - OFF

Hold down the trigger for 3 seconds with the selector lever in the "AUTO" position to save and exit the program settings.

・Binary: Fires one shot when the trigger is pulled, and one shot when it is released.
・AUG: Pulling the trigger shallowly results in semi-auto fire; pulling it deeply results in full-auto fire.
・Sniper: Pull the trigger once, and after a beep sounds, pull it again to fire.

*For normal use, please use pre-cocking settings LEVEL 1-3. LEVEL 4-6 are for advanced custom setups.
*The active brake is "ON" by default. If you do not perform any custom modifications, there is no need to turn it "OFF," so please use it as is.

■Accessories
・Spring magazine ×2
・Cleaning rod
・Hex wrench
・Small Tamiya - Deans adapter
・BB speedloader
・M90 additional spring

■Caution:
※Product specifications are subject to change without notice.
※This product is for "ages 18 and older." Persons under 18 years of age are not permitted to use or purchase it.
※Customers who purchase this product may be asked to present identification by local authorities or the police. In such cases, you must comply with the request and provide identification.