[Specna Arms] SA-F04 FLEX ETU G2 BLDC AEG Rifle / 18+ (Delayed shipment / Scheduled for release in early August 2026 - Pre-order)

Manufacturer's Notice
Due to a higher-than-expected volume of orders, we may allocate products based on arrival quantity.
Some customers may have their orders shipped with the second batch of arrivals. (Updated: 2026/07/10)

Due to delays in shipping schedules, we have decided to change the release date to early August. (Updated: 2026/07/22)

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 mobility, featuring quick aiming and high maneuverability.

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

【Features】
・Dark Matter™ brushless motor as standard
・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
・Quick-change spring system included
・Full-auto/burst/semi-auto compatible
・T-connector adopted
・Includes 2 x 125-round spring magazines

■Product Specifications:
・Handguard type: M-LOK
・Inner barrel diameter: 6.03mm
・Inner barrel material: Brass
・Inner barrel length: 229mm
・Chamber type: Rotary TDC Magnus™
・Body size: 670mm～750mm
・Body weight: 2125g
・Quick spring change system included
・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: Equipped with HAL
・Connector type: T-connector
・Compatible battery: EVO LiPo battery 7.4V/1200mAh stock pipe-in (T-connector)
・Motor: Dark Matter™
・Gearbox: Gearbox V2

It adopts specifications that prioritize practicality both internally and externally, such as a rotary TDC Magnus™ hop-up chamber, 8mm slide bearings + steel gears, and a quick spring change system.
The M-LOK handguard and receiver made of nylon fiber reinforced polymer also ensure lightness and ease of handling. It is a well-balanced gun that can be used in a wide range of fields right out of the box.

■Initial startup method
1. Set the selector to "SAFE."
2. Connect the battery. After connecting, there will be "3" beeps. Approximately 3 seconds later, there will be "1 high-pitched beep."
3. Pull and hold the trigger for approximately 5 seconds. The setting is complete when there are "2" high-pitched beeps.

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

【Main functions of HAL ETU™】
・Full-auto / Semi-auto / Set burst firing
・Trigger sensitivity setting
・Pre-cocking setting
・Active braking setting

■Equipped with Dark Matter™ motor

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

■Setting Specna Arms electronic trigger "HAL"
Switch the selector switch quickly twice from "AUTO" to "SEMI" and set it to "SEMI" to enter programming mode.
In programming mode, first select each setting item. When you pull the trigger once with the selector switch still in "SEMI," a beep will sound, and you can switch between 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 braking setting

With the desired setting item selected, switch the selector lever to "AUTO" to enter the detailed setting mode for each item.
Hold down the trigger for 3 seconds with the selector lever in "AUTO" 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 braking setting
1 beep - ON
2 beeps - OFF

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

・Binary: One shot when pulling the trigger, one shot when releasing
・AUG: Light trigger pull for semi-auto, deep pull for full-auto
・Sniper: Pull the trigger once, and after a beep, pull the trigger again to fire

※For normal use, please use pre-cocking settings from LEVEL 1 to 3. LEVEL 4 to 6 are for advanced custom settings.
※Active braking is set to "ON" by default. If you do not customize it, there is no need to set it to "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 over." Individuals under 18 years old cannot use or purchase this product.
※Customers purchasing this product may be asked to present identification by local authorities or the police. In such cases, please comply and submit your identification.