Specna Arms SA-F04 Flex Gen. 2 HAL ETU AEG Assault Carbine - Olive

Electric replica of the SA-F04 assault carbine from the Flex Gen. 2 series, constructed from nylon-reinforced polymer combined with metal components. Outfitted with a HAL ETU control module for user-customizable settings, a rotating TDC Magnus Hop-Up chamber, a reinforced Aether gearbox, and an ESA quick spring change system. Notable for its compact, ergonomic build, the model excels in CQB scenarios as well as close to medium-range engagements.

The receiver, front assembly equipped with the M-LOK system, receiver extension featuring the Light Ops Stock, and the pistol grip are constructed from nylon-reinforced polymer. Components including the flash hider, outer barrel, dummy bolt carrier, ejection port cover, fire selector switch, bolt release button, magazine catch, QD mounts on the stock, pins, and charging handle are manufactured from metal. The receiver displays surface markings and a unique serial number. Alongside the M-LOK system, RIS rails with the 22 mm standard are installed on the upper and forward sections of the handguard, enabling integration of optics or other tactical accessories.

Double-sided and enlarged operational controls (selector and magazine release), as well as a bolt-catch mechanism, are featured in this model.

Factory-fitted with a rotating TDC Magnus Hop-Up chamber (Top Down Center) and equipped with a Helium Flat Hop bucking, the replica guarantees consistent BB rotation. Enhanced 6.03 mm precision barrel delivers superior shot accuracy. A standard flash hider is fixed to the outer barrel via a 14 mm left-handed thread, providing the option to install a silencer as required.

At the heart of the replica lies a V2 gearbox built upon the enhanced Specna Arms Aether framework, offering:

• main spring release capability
• pre-cocking and AoE inspection ports
• reinforced front section
• inspection ports designed to simplify shimming
• trigger adjustment capability
• screw holes for precise framework alignment
• compatibility with M140 springs

Internally, the mechanism is further supported by:

• 8-mm sliding bearings
• steel gear set
• polycarbonate piston featuring a full steel rack

Integrated with a HAL ETU trigger control system, the model ensures efficient replica performance and enables convenient function customization directly through the trigger and selector. The HAL system delivers a variety of options for tailoring the replica to the shooter's needs and enhancing operational safety, featuring:

• Trigger activation detection utilizing magnetic sensors and the Hall effect
• Active braking system
• Binary firing capability
• Trigger sensitivity adjustment across 5 levels, ranging from 20% to 100%
• Pre-cocking settings adjustable through 6 levels
• Programmable Auto firing modes including Full Auto, Semi, 3-round Burst, and 5-round Burst
• Programmable Semi firing modes with options for Semi, Binary, AUG, and Sniper
• Simple function programming accessible through the trigger
• Low battery level notification
• Compatible with brushless motor systems

Featuring the ESA quick spring change system, the carbine enables easy power adjustment to match game requirements, without the need to disassemble the gearbox or use specialized tools. Out of the box, the replica includes a default spring delivering an output velocity of 410 FPS, as well as an additional M90 spring.

Equipped with a lightweight Light Ops Stock featuring a collapsible structure, the replica ensures versatile use. Both sides of the cheek rest are fitted with rubber, non-slip inserts to enhance stability while aiming. The buttstock is complemented by a curved rubber pad, providing a secure and comfortable fit against the shoulder.

• replica
• Hi-cap S-MAG magazine
• cleaning rod
• small tamiya - t-deans adapter
• spare M90 spring

• Receiver constructed from nylon-fiber reinforced polymer
• M-LOK handguard equipped with supplementary RIS rails
• HAL ETU electronic trigger unit
• Aether gearbox with reinforced internals
• ESA rapid spring change system
• Magnus Hop-Up chamber featuring TDC adjustment
• Light Ops Stock for enhanced ergonomics
• Folding iron sights
• 6.03 mm high-precision barrel