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SA M4 CQB RL M-LOK Gen2 (SA-F04-RL FLEX™ HAL ETU™) – Black
Specna Arms M4 CQB RL M-LOK Gen2 (SA-F04-RL FLEX™ HAL ETU™) in black finish is a high-performance airsoft rifle with 115 m/s power and upgraded internals. It features a HAL ETU™ processor unit with pre-cocking and trigger sensitivity adjustment, along with a nylon RL AR15 body and M-LOK handguard. The TDC hop-up chamber with Helium™ flat bucking ensures excellent accuracy.
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Accessories
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Why Choose M4 CQB RL M-LOK FLEX™ Gen2 from Specna Arms?
Specna Arms M4 CQB RL M-LOK Gen2 (SA-F04-RL FLEX™ HAL ETU™) is built on a lightweight yet durable FLEX™ RL AR15 nylon body reinforced with glass fiber, offering a realistic matte finish and excellent resistance to wear, outperforming cheaper alloy bodies. This is the RL SAAS model (Specna Arms Accessory System), featuring a more aggressive design compared to standard AR15 receivers. The outer barrel with a 14 mm CCW thread and steel components such as pins, screws, and the ejection port provide strength where it matters. The result is a lightweight yet robust assault rifle platform, ideal for CQB environments and dynamic gameplay. The AR15 (M4) platform ensures intuitive controls. It features an ambidextrous charging handle, clear fire selector, and easy hop-up adjustment through the ejection port. The M-LOK handguard allows mounting accessories such as a foregrip, tactical flashlight, or PEQ box. The Light Ops stock with rubberized cheek rest and QD sling points keeps the setup lightweight. The battery is stored in the buffer tube, requiring a buffer stick battery. Overall, this rifle combines low weight, modern construction, and high-quality Gen2 internals. The FLEX™ Gen2 series stands out with internals such as the Æther™ gearbox, HAL ETU™, metal nozzle, TDC hop-up chamber with Helium™ flat bucking, and a 6.03 mm precision inner barrel.
Key Features of Specna Arms M4 CQB RL M-LOK FLEX™ Gen2
Technical Specifications
- Platform: M4 / AR15
- Series: FLEX™ Gen2
- Length: 670-750 mm
- Weight: 2125 g
- Power Source: AEG
- Unit: HAL ETU™
- Gearbox: Æther™ V2 QSC
- Quick Spring Change: Yes (ESA™)
- Hop-up: TDC
- Inner Barrel: 6.03 mm
- Velocity: 115 m/s
- Bearings: 8 mm
- Connector: T-Dean
- Body Material: Fiber-reinforced nylon
- Handguard: M-LOK
- Thread: 14 mm CCW
Package Contents
- Specna Arms M4 CQB RL M-LOK FLEX™ Gen2
- Hi-cap magazine (300 BBs)
- Flip-up sights
- M90 spring
- Specna Arms stickers
- User manual
Important Notice Before First Use
To start using the rifle, it is necessary to activate the HAL ETU unit by following this exact procedure, otherwise the rifle will not respond to the connected battery:
- Set the fire selector to Safe
- Connect the battery and wait 3 seconds until you hear a beep
- Pull and hold the trigger for 5 seconds until you hear another beep
- The rifle is now ready to use
| Variants | FLEX™ Gen2 |
| Color | Black |
| Muzzle velocity (m/s) | 115 (m/s) |
| Recommended weight of ammunition | 0,25g - 0,28g |
| Thread (mm) | 14- (mm) |
| Outer length MINIMAL (mm) | 670 (mm) |
| Outer length MAXIMAL (mm) | 750 (mm) |
| Inner barrel length (mm) | 229 (mm) |
| Weight (g) | 2130 (g) |
| Body/receiver material | ABS / Plastic |
| Mounting System | M-LOK |
| Gearbox version | V2 - ESA™ |
| Amount of piston teeth | 14 |
| Bearings (mm) | 8 (mm) |
| Bearings (material) | Metal |
| Piston head | Plastic |
| Nozzle | Metal |
| Spring guide | Plastic |
| Hop-Up chamber material | Plastic |
| Battery type | Buffer stick |
| Connector type | T-Dean |
| Magazine material | Plastic |
| High-cap / Mid-cap | High-cap |
| Magazine capacity | 300 |
| Processor unit | YES |
| Blowback | NO |
| Battery included | NO |
| Battery Charger | NO |
| Weapon accessories | Yes |