Specna Arms SA-F04-RL FLEX Gen.2 HAL ETU M4/AR-15 AEG, Black

Specna Arms SA-F04-RL FLEX Gen.2 HAL ETU M4/AR-15 AEG - Black

Dominate the field with the Specna Arms SA-F04-RL FLEX Gen.2, now upgraded with the cutting-edge HAL ETU for unparalleled trigger response and customisation.

Part of the renowned FLEX series, the SA-F04-RL is designed to provide a lightweight yet incredibly durable platform for both beginners and seasoned skirmishers. This Gen.2 model introduces significant internal and external refinements, most notably the inclusion of the HAL Electronic Trigger Unit, which transforms the firing experience and gives you total control over your replica?s behaviour.
Advanced Technology: The HAL ETU

The standout feature of this Gen.2 model is the factory-fitted HAL (Holographic Armory Link) Electronic Trigger Unit. This system replaces traditional mechanical trigger contacts with advanced sensors, offering:

Programmable Firing Modes: Easily switch between binary trigger, burst fire, and adjustable semi/auto settings.

Trigger Sensitivity Adjustment: Fine-tune the "break" of your trigger for lightning-fast shots.

Active Braking: Ensures the motor stops instantly, preventing double-feeding and protecting your gearbox internals.

Battery Protection: Integrated low-voltage alarms to keep your LiPo batteries safe during long game days.

Performance & Build Highlights

FLEX Series Construction: The receiver, slim-line stock, and free-float handguard are manufactured from high-grade, glass-fibre reinforced polymer. This keeps the rifle exceptionally lightweight and agile for CQB while remaining robust enough for woodland environments.

ESA? Quick Spring Change System: Adjust your FPS in seconds without dismantling the gearbox. Simply remove the stock tube to access the spring, allowing you to adapt to any site?s power limits instantly.

Precision Internals: Featuring an 8mm bearing gearbox, a polycarbonate piston with full steel teeth, and a rotary-style hop-up unit paired with a 6.03mm precision inner barrel for out-of-the-box accuracy.

Modern Aesthetics: The Half-Tan finish provides a stylish, tactical look, while the RL-style handguard features a top Picatinny rail and M-LOK compatibility for all your lights, lasers, and grips.