Specna Arms SA-F04-RL FLEX Gen.2 BLDC HAL ETU airsoft AEG

The Specna Arms SA-F04-RL FLEX™ Gen.2 is an electric (AEG) airsoft carbine based on the M4/M16 platform, fitted with a programmable HAL™ ETU and a Specna Arms Dark Matter™ High Speed 27k brushless motor. The RL version has a new receiver and a lightweight Light Ops stock.

The FLEX™ Gen.2 series is designed for players who want a lightweight, adjustable AEG at a reasonable price. The receiver is fibre-reinforced nylon and the most stressed parts are metal. It weighs 2125 g.

Features

Lightweight, compact design
Fibre-reinforced nylon receiver and M-LOK handguard
Metal flash hider, outer barrel, dust cover, fire selector, bolt release, magazine catch, stock QD mounts, pins and charging handle
Enlarged ambidextrous controls (selector and magazine release)
Functional bolt catch
Light Ops stock with rubber cheek pads and curved rubber buttpad
Ergonomic pistol grip
Flip-up iron sights
Magnus™ TDC (Top Down Center) rotary hop-up chamber
Helium™ Flat Hop bucking
Sealed aluminium nozzle and 6.03 mm precision inner barrel
ESA™ quick spring change system

Æther™ gearbox and internals

The reinforced Æther™ gearbox shell has a mainspring release function, inspection windows for pre-cocking, AoE and shimming, a reinforced front section, trigger adjustment and screw holes for shell alignment. It is compatible with M140 springs. Inside are 8 mm bushings, steel gears and a polycarbonate piston with a full steel tooth rack.

Programmable HAL™ ETU

The HAL™ unit detects trigger movement with Hall-effect magnetic sensors and is programmed through the trigger.

Active brake
Binary trigger
Adjustable trigger sensitivity, 5 levels (20-100%)
Adjustable pre-cocking, 6 levels
Programmable AUTO modes: full auto, semi, 3-round burst, 5-round burst
Programmable SEMI modes: semi, binary, AUG, sniper
Low battery warning
Compatible with brushless motors

By default, the AUTO position fires a 3-round burst first and then continues in full auto.

Dark Matter™ BLDC brushless motor

A brushless design reduces wear related to carbon brushes. The motor is energy efficient, generates less heat and gives a fast trigger response.

Specifications

Power source: electric (AEG)
Electronics: HAL™ ETU, programmable
Motor: Specna Arms Dark Matter™ High Speed 27k, brushless (BLDC)
Gearbox: Æther™, V2
Fire modes: semi, full auto, programmable bursts
Muzzle velocity: approx. 390 FPS (approx. 119 m/s) with 0.20 g BBs
Muzzle energy: approx. 1.41 J (calculated for a 0.20 g BB)
Inner barrel: 235 mm, diameter 6.03 mm
Barrel thread: 14 mm CCW
Length: 750 mm (stock extended)
Weight: 2125 g
Magazine: S-MAG mid-cap, 125 BBs
Battery: short stick type in the buffer tube, 7.4 V or 11.1 V LiPo (long AK stick batteries do not fit)
Battery connector: Deans / T-connect (Mini Tamiya - Deans adapter included)
Materials: fibre-reinforced nylon, metal
Hop-up: yes
Blowback: no