The Specna Arms FLEX™ Gen.2 series was developed to deliver strong performance and a great user experience at an attractive price. The SA-F08 is a lightweight, compact carbine that’s ready for the field straight out of the box – featuring premium-style hop-up control, solid internal components, and the HAL ETU™ control unit with multiple fire modes and on-board tuning. This version is powered by the Specna Arms Dark Matter™ High Speed 27k brushless motor for fast response and efficient drive.
Key features
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TDC Magnus™ Rotary Hop-Up (Top Down Center) – very accurate and stable hop adjustment (EU patent: 015052069-0001)
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Helium™ Flat Hop Eraser – improves consistency and effective range
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Sealed aluminum nozzle – better air seal and more consistent operation
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ESA™ quick spring change – adjust power quickly without specialized tools
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Specna Arms Dark Matter™ High Speed 27k brushless motor – fast, efficient and responsive
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Lightweight, compact build – especially good for dynamic play
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RRA Lightweight Free Float Rail (M-LOK) – Rock River Arms® licensed front rail with accessory mounting options
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Folding iron sights – ready to use even without an optic
Ather™ Gearbox (reinforced)
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Mainspring release function
- Pre-cocking and AoE inspection windows
- Reinforced front
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Inspection windows for easier service / setup
- Trigger adjustment function
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Frame alignment screw holes – helps fine-tune gearbox alignment
- Ready for M140 springs
HAL ETU™ (Hall Effect) – functions
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Magnetic trigger detection (Hall effect) – fast, precise response
- Active Brake
- Binary trigger
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Adjustable trigger sensitivity – 5 levels (20–100%)
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Adjustable pre-cocking – 6 levels
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AUTO programmable fire modes – full auto / semi / 3-round burst / 5-round burst
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SEMI programmable fire modes – semi / binary / AUG / sniper
- Easy programming via the trigger
- Low battery warning
- Compatible with brushless motors
Note: In AUTO, the replica fires a 3-round burst first and then switches to full auto.
Construction & externals
The replica is made mainly of nylon fiber-reinforced polymer and metal parts. The polymer is characterized by high strength, a rough texture, and a matte finish. The most critical parts are made of metal, including the flash hider, outer barrel, dummy bolt, ejection port cover, fire selector, bolt catch button, magazine release, QD mounts on the stock, pins, and the charging handle.
The replica features a front-mounted RRA Lightweight Free Float Rail in the M-LOK standard, licensed by Rock River Arms®. The outer barrel ends with a standard muzzle device mounted on a 14mm CCW thread. Folding iron sights are installed on the replica.
Internals (manufacturer listed)
- 8 mm bearings
- Steel gears
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Polycarbonate piston with full steel teeth
- 6.03 mm precision inner barrel
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TDC Magnus™ chamber, Helium™ Flat Hop, sealed aluminum nozzle
- Specna Arms Dark Matter™ High Speed 27k brushless motor
ESA™ quick spring change
The replica uses the ESA™ quick-change spring system. This allows you to quickly and efficiently adjust the power of the replica to local field limits and conditions without a workshop or specialized tools.
Summary
- Lightweight and compact design
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HAL ETU™ control unit
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M-LOK front end with accessory mounting options
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ESA™ quick-change spring system
- Folding iron sights
- Specna Arms Dark Matter™ High Speed 27k brushless motor
Package includes
- Airsoft replica
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2 x S-MAG Mid-Cap magazines
- Cleaning rod
- Allen key
- Small Tamiya to Deans adapter
- BB speedloader
- Extra spring: M90
Not included
Note: Calibrating the HAL™ trigger before use:
This airsoft gun is equipped with the HAL ™ system and before using the gun, the trigger must be activated. Activation is done as follows:
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Introduction: 1. Turn the gun's fire selector to the "SAFE" position 2. Connect the battery to the gun 3. Wait three (3) seconds until the gun emits a "beep" sound. 4. Press the trigger all the way down for five (5) seconds until the gun emits a "beep" sound. This indicates that the trigger has been successfully activated. |
Link:
HAL manual_EN
| Gearbox version |
Gearbox v2 |
| Hop-Up |
Yes |
| Product weight [g] |
2210 |
| Material |
Plastic |
| Length minimal [mm] |
600 |
| Product length [cm] |
76 |
| Power supply |
Electric |
| Colour |
Black |
| Manufacturer model code |
SA-F08-ETU-G2-BLDC |
| MOSFET/ETU |
Yes |
| Muzzle velocity [FPS] |
380 |
| Velocity [m/s] |
115.82 |
| Blow Back |
No |
| Battery included |
No |
| Quick Spring Change system |
Yes |
| Type of plug |
DEANS / T-connect |
| Type of thread on the barrel |
14mm CCW |
| Fire mode |
Semi-auto |
| Inner barrel length [mm]. |
255 |
| Magazine capacity [pcs.] |
125 |
| Made of |
Polymer |
| Specna Arms Line |
FLEX™ |