Specna Arms SA-F09 FLEX Gen.2 HAL ETU M4 AEG – Black

The Specna Arms SA-F09 FLEX Gen.2 HAL ETU M4 AEG represents Specna Arms’ commitment to delivering affordable, field-proven assault rifles without compromise. This electric rifle combines precision engineering with modular platform design, making it equally at home in woodland skirmishes, urban milsim, or target practice sessions.

Key Features

• HAL¹ Electronic Trigger Unit (ETU) – programmable firing modes, safety lock, and round-count precision
• 310 fps (20g) – site-legal across UK outdoor venues; perfectly tuned for balanced range and accuracy
• Dual-colour scheme – Black or Half-Tan finish for flexible loadout styling
• M-LOK and 20mm RIS/RAS rail system – endless scope, laser, and accessory mounting options
• Modular M4 platform – compatible with countless aftermarket handguards, stocks, and upper receivers
• 300rd high-capacity magazine – extended field endurance without frequent reloads
• Sliding, multi-position M4 crane stock – adjustable for different play styles and body armour
• Alloy barrel shroud and steel internals – robust construction for repeated use and long-term durability

Real-World Use Cases

Entry-level and experienced skirmishers favour the SA-F09 for its balance of affordability and performance. Milsim players appreciate the authentic M4 ergonomics and rail coverage for loadout customisation. Target shooters benefit from the 310 fps velocity sweet spot and programmable trigger discipline. Gift-buyers find it an excellent introduction to AEG technology without the price shock of full-metal equivalents.

Technical Specifications

• Firing Power: 310 fps (0.20g BBs); V2 gearbox, standard motor
• Rate of Fire: Semi, full auto, and programmable modes via HAL ETU
• Magazine Capacity: 300 rounds (high-capacity AEG compatible)
• Battery: 7.4V Deans connector (included charging protocol recommended)
• Overall Length: 800 mm – compact enough for CQB, full-length for outdoor range
• Weight: 2.2 kg unloaded – manageable for extended play sessions
• Hop-Up: Rotary adjustment – consistent backspin across the FPS envelope
• Rail System: 20mm RIS/RAS receiver, M-LOK compatible handguard
• Stock: M4 crane stock, sliding and multi-position for LOP (length-of-pull) customisation
• Construction: Alloy outer barrel, trigger assembly, and flash hider; high-density polymer receiver, handguard, buffer tube, stock, and pistol grip; steel pins and internals

Compatibility & Upgrades

The SA-F09 uses a standard V2 gearbox, opening the door to countless upgrade paths. Drop-in mosfets, SHS high-torque motors, and precision barrels are all plug-and-play options. M-LOK and 20mm picatinny rail space accommodates red-dot sights, magnified optics, pressure pads, grips, and vertical foregrips. Magazine compatibility spans all AEG standards, so your collection of STANAG mags will feed without issue.

UK Legal & Site Notes

At 310 fps (0.20g), the SA-F09 is safe for UK sites with a 2-2.8 joule limit. Always chronograph on-site and carry a VCRA defence certificate (retailer proof of sale). Two-tone paint schemes are optional but unnecessary for UK skirmish sites that enforce Airsoft Player Code of Conduct rules. Check your local site chronograph requirements before first use.

Whether you’re stepping into airsoft for the first time or building a backup rifle, the Specna Arms SA-F09 FLEX Gen.2 HAL ETU M4 AEG delivers the reliability, modularity, and accuracy expected from a respected platform. In stock now at Airsoftdirect UK – order today and get field-ready in 1–2 business days.