Specna Arms SA-FX01 Flex Gen.2 HAL ETU

The submachine gun model Specna Arms FLEX SA-FX01 HAL ETU Gen.2 is a compact and agile electric weapon that offers a modern design, lightweight body and updated internals familiar from the Gen2 model series right out of the box. Thanks to its compact size and top-notch workmanship, the replica is an excellent choice for CQB games. In addition, the replica can be effectively used as a sidearm for a sniper or LMG operator.

The gun's frame, buttstock, and fore-end are made of nylon fiber-reinforced polymer, making it lightweight but significantly more durable than a conventional polymer frame. The outer barrel, flame arrester, charging handle, and controls are made of metal, and critical parts such as pins, screws, the magazine well, and the dummy bolt are made of steel.

Inside, you’ll find a reinforced Aether™ Ver.2 gearbox with ESA™ quick spring change system, which allows for quick spring changes without opening the gearbox. Additionally, the gun features a 6.03mm precision barrel, Magnus™ TDC Hop-Up chamber and Helium™ Flat Hop rubber for excellent range and consistency. The HAL ETU™ unit brings programmable fire modes and ultra-sensitive trigger detection, making the firing remarkably responsive.

Aether™ gearbox and internals

The Aether™ gearbox is designed as the heart of the Specna Arms EDGE Gen.2 series, offering exceptional durability and versatile features. The gearbox body is reinforced to withstand heavy use and high spring forces. This ensures reliability over long periods of use. The gearbox is designed with inspection windows that allow you to easily check the Angle of Engagement (AOE) adjustments and pre-tension without having to disassemble the entire system. The gearbox’s precise screw holes ensure proper alignment and balance of the parts, which improves service life and reliability. The gearbox is equipped with 8mm J-cage ball bearings (in the motor and piston gears) and 8mm plain bearings (in the sun gear), which ensure smooth and efficient operation at high rotational speeds. The anti-reversal release hole allows for easy spring release, preventing tension on the parts and preventing damage. The trigger tension adjustment screw allows for precise adjustment of trigger sensitivity, providing the player with optimal feel and response. The ESA™ quick spring change makes it easy to change power to suit venue output limitations without having to disassemble the gearbox.

Specna Arms HAL Electronic Trigger Unit

The Specna Arms HAL Electronic Trigger Unit (HAL ETU™) is an electronic control unit that brings advanced trigger sensing and programmable fire modes to the FX01 Gen2. The unit utilizes magnetic sensors and Hall effect, allowing for extremely accurate and fast trigger feel. Programming is done using only the trigger, making changing settings quick and easy in the field.

HAL ETU™ unit features

Trigger detection with magnetic sensors
Active brake
Binary trigger
Adjustable trigger sensitivity (5 levels, 20-100%)
Adjustable pre-tune (6 levels)
Programmable AUTO modes: full auto, semi-auto, 3-shot burst, 5-shot burst
Programmable SEMI modes: semi-auto, binary, AUG, sniper
Easy programming using a trigger
Battery voltage alarm
Compatible with brushless motors

Features

Fiber-reinforced polymer construction
M-LOK forend
Minimalist Light Ops stern
Flip-up sights
S-MAG X Hi-Cap magazine for 275 bullets
Magnus™ TDC Hop-Up
Helium™ Flat Hop Rubber
6.03 mm precision barrel
Aether™ Ver.2 gear box
ESA™ quick spring change
14 mm CCW external thread

Specifications

Operating mode: Electric
Model code / SKU:
Barrel inner diameter: 6.03 mm
Inner barrel length: 229 mm
Gearbox type: Ver2 Aether™
Hop-Up: Magnus™ TDC / Helium™ Flat Hop
MOSFET/ETU: HAL ETU™
Battery connector: Deans / T-connect (Mini Tamiya – Deans adapter included)
Battery recommendation: Stick-type LiPo / Li-Ion
Magazine capacity: 275 rd (S-MAG X Hi-Cap)
Length: 670–760 mm
Weight: approx. 2000 g
Output power: approx. 1.48 J / approx. 121 m/s (0.20 g)
Barrel threads: 14 mm CCW
Blowback: No

Package contents

Specna Arms SA-FX01 FLEX™ HAL ETU Gen.2 electric gun
S-MAG X Hi-Cap magazine 275 rounds
M90 replacement spring
Mini Tamiya – Deans adapter
Ramrod
Allen key

When you first start the replica, hold the trigger in SAFE mode for approximately 5 seconds immediately after connecting the battery to activate the HAL™ module.

NOTE! The package does NOT include a battery or charger. Check the "You might also be interested in these products" section of the product to find a suitable battery or choose the battery you want from our wide selection of batteries. Then choose the right charger for that battery.

Specna Arms SA-FX01 Flex Gen.2 HAL ETU

Aether™ gearbox and internals

Specna Arms HAL Electronic Trigger Unit

Specna Arms X series S-Mag mid-cap magazine - black - 120 rounds

Specna Arms X series S-Mag mid-cap magazine - sand - 120 rounds

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