SA M4 F03 FLEX Gen 2 BLDC™ HAL ETU™ - Tan

Specna Arms SA-F03 FLEX™ Gen.2 – Top-Tier Tactical Performance

The FLEX™ Gen.2 series from Specna Arms has been redesigned from the ground up to give players an uncompromising, high-performance airsoft carbine straight out of the box. With the brand-new magnetic HAL™ ETU unit and innovative TDC Magnus™ Hop-Up system, this lightweight and affordable model delivers features you would normally only find on much more expensive rifles.

Important at start-up (Programming):

This rifle has an electronic trigger that must be activated when you connect the power.Do this by holding down the trigger for 5 seconds as soon as you plug in the battery, until you hear a few beeps. The weapon is now ready to use! If the rifle is stored without a battery for an extended period, it may reset—just repeat this 5-second process. If you want more advanced settings, a separate programming card with simple instructions is included in the box.

HAL™ (Hall Effect) Advanced Electronic Trigger

The heart of this Gen.2 carbine is the groundbreaking HAL™ system. The trigger is detected via contactless magnetic sensors (Hall effect), providing unmatched responsiveness and reliability. The system can be programmed in seconds via the trigger and enables features such as:

• Adjustable sensitivity: 5 levels from 20% to 100% for an ultra-light trigger pull.
• Binary Trigger: Fires one shot when you pull the trigger and one shot when you release it.
• Active Brake: Stops the motor immediately to prevent wear and double shots in semi-auto mode.
• Pre-cocking: Holds the piston partially cocked (6 levels) for instant shot response.
• Smart Modes: Fully programmable Burst (3-round or 5-round), AUG mode, and Sniper delay.

Premium Internals and Patented Solutions

SA-F03 is built around the reinforced Æther™ V2 Gearbox frame (European patented design) . The gearbox features inspection windows for AoE adjustment, an adjustable trigger function, and an extremely practical mainspring release button that relieves spring tension after use.Combined with a sealed aluminum nozzle, steel gears, and a piston with full steel teeth, this is a system built to last.

For optimal range and accuracy, the rifle is equipped with the patented TDC Magnus™ Rotary Hop-Up unit (Top Down Center). Unlike standard hop-up chambers, the TDC system applies perfectly even pressure to the included Helium™ Flat Hop rubber, , resulting in an incredibly stable BB trajectory through the 6.03mm precision inner barrel.

Lightweight, Ergonomic, and Field-Ready

The body, M-LOK handguard, and minimalist Light Ops stock are made from durable nylon fiber-reinforced polymer. This keeps the total weight down to just 2.2 kg, helping you maintain maximum mobility during intense CQB matches. The outer barrel, flash hider, and essential controls are made from robust metal and steel.Thanks to the ESA™ Quick Spring Change system, you can swap the main spring in under a minute when switching between indoor and outdoor play.

Technical specifications

The customer purchases the goods at their own risk and is responsible for complying with all local legal requirements regarding the purchase, possession, use, or transport of the goods available in the online store.

This includes, but is not limited to, ASG (softguns), air rifles, and paintball replicas, which may be subject to specific regulations concerning weapons and ammunition.

Restrictions on the purchase, possession, use, or transport of these goods may apply in the destination country, and the seller assumes no responsibility for this. Any fees or costs (including administrative fees, validation, taxes, and customs duties) are the customer's responsibility.

The use of ASG (softguns), air rifles, and paintball replicas requires appropriate safety measures and caution. These products are not intended for persons under 18 years of age.