Replica Airsoft M4 Flex SA-F05-RL HAL ETU Gen2 Brushless (Specna Arms)

The BLDC™ (Brushless Direct Current) motor is a DC motor in which the traditional brushes—typically responsible for transmitting current—have been eliminated.

no sparking
longer lifespan (no parts subject to wear)
stable performance, even at high speeds
high energy efficiency
quiet operation
low heat generation
immediate response upon activation
high torque from the very start
allows for the use of stiff springs without any loss in performance or rotational speed

Specna Arms Flex Gen.2 airsoft rifles have been developed to offer the best possible performance at an attractive price point. Built upon experience, passion, and dedication, these rifles have been redesigned to achieve even greater performance—providing the user with a factory-ready product capable of handling any challenge on the airsoft field. To this end, the Flex Gen.2 has been equipped with, among other features:
- A rotary Magnus™ TDC (Top Down Center) Hop-Up chamber, allowing for highly precise and stable adjustment (covered by European patent number 015052069-0001)
- An Helium™ Flat Hop Eraser, which improves the stability of the BB's flight path
- An airtight aluminum nozzle
- An Æther™ Gearbox—a reinforced shell (covered by European patent number 015044865-0001)—featuring:
a spring-release function
pre-cocking and AoE (Angle of Engagement) inspection windows
a reinforced front section
inspection windows to facilitate pre-cocking setup
a trigger adjustment function
screw holes for precise shell alignment
Designed for use with M140 springs

HAL™ system features:
- Trigger detection based on magnetic sensors and the Hall effect
- Active braking
- Binary trigger
- Adjustable trigger sensitivity (5 levels, from 20% to 100%)
- Adjustable pre-cocking (6 levels)
- Programmable AUTO firing modes (full auto, semi, 3-round burst, 5-round burst)
- Programmable SEMI firing modes (semi, binary, AUG, sniper)
- Easy programming via the trigger
- Low-battery alarm
- Compatible with brushless motors

**In AUTO mode, the replica fires a 3-round burst first, followed by full-auto fire.
The replica is constructed primarily from nylon-fiber-reinforced polymer and metal components. The polymer used is characterized by high durability, a textured surface, and a matte finish. The most significant components are made of metal, including the flash hider, outer barrel, mock bolt carrier, ejection port cover, fire selector, cylinder head release button, magazine, QD sling attachment points on the stock, pins, and charging handle.
The barrel assembly is an original Specna Arms design, combining aesthetic appeal with excellent ergonomics. Every element has been manufactured and assembled with meticulous attention to detail. The model features enlarged, ambidextrous controls (fire selector and magazine release) as well as a functional bolt catch.

The "Light Ops" stock is a minimalist design, lightweight and featuring a sleek, modern aesthetic. It includes anti-slip rubber cheek pads on both sides and a curved rubber butt pad that rests comfortably against the shoulder.

In addition to the aforementioned internal components (Magnus™ TDC hop-up chamber, Æther™ gearbox shell, Helium™ flat hop-up bucking, and a sealed aluminum nozzle), the replica includes:
- 8mm bushings
- Steel gears
- A polycarbonate piston with full steel teeth
- A high-quality 6.03mm precision inner barrel
- An efficient Specna Arms Dark Matter™ High Speed ​​27k brushless motor

The replica utilizes the ESA™ (Easy Spring Access) quick-change spring system. This allows for quick and efficient adjustment of the replica's muzzle velocity to suit field conditions, without the need for a workshop or specialized tools.

Replica features:
- Lightweight and compact design.
- Functional bolt catch. - Ambidextrous controls.
- HAL™ system.
- Light Ops stock.
- Ergonomic pistol grip.
- M-LOK compatible handguard.
- ESA™ quick-change spring system.
- Flip-up sights.
- Specna Arms Dark Matter™ High Speed ​​27k high-performance brushless motor.

Box contents:
2 x S-MAG mid-cap magazines
Cleaning rod
Replica
Allen key
Small Tamiya to Deans adapter
BB speed loader
Additional M90 spring
Not included:

The kit does not include a battery or battery charger.
NOTE!!!

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