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Specna Arms SA-F04-RL Flex HAl GEN.2
Product Details
Brand:
Specna Arms
Electric Rifle SA-F04-RL Flex Gen.2
Features
Polymer receivers
Polymer M-LOK handguard with standard 20mm side rails
Full-length 20mm top rail
6-position adjustable Light Ops retractable stock
300-round hi-cap polymer magazine
Flip-up sights
Specna Arms HAL™ ETU
Ather™ reinforced gearbox
ESA™ quick spring change system
Magnus™ TDC rotary hop-up chamber with Helium™ flat hop rubber
Battery compartment inside stock tube
Deans connector with Mini-Tamiya adapter included
Length: 670mm – 750mm
Weight: 2125g
Battery and charger not included
The Specna Arms Flex Gen.2 series has been designed to deliver outstanding performance, reliability, and value straight out of the box. Built on years of experience, development, and player feedback, the Gen.2 platform offers enhanced functionality and upgraded internals suitable for players of all skill levels.
Internal Upgrades
The Flex Gen.2 series includes several advanced internal components:
TDC Magnus™ rotary hop-up chamber (Top Down Center) for precise and stable hop-up adjustment (European Patent No. 015052069-0001)
Helium™ flat hop rubber for improved BB flight consistency
Aluminium sealed nozzle for enhanced air seal and efficiency
Ather™ reinforced gearbox shell (European Patent No. 015044865-0001), featuring:
Mainspring release function
Pre-cocking and AOE inspection windows
Reinforced front section
Easy-access inspection windows
Trigger adjustment capability
Alignment screw points
Compatibility with springs up to M140
HAL™ Electronic Trigger Unit
The integrated HAL™ ETU provides advanced electronic control and customisation options:
Hall-effect magnetic trigger detection
Active brake
Binary trigger mode
Adjustable trigger sensitivity (5 levels from 20% to 100%)
Adjustable pre-cocking (6 levels)
Programmable automatic fire modes:
Full Auto
Semi-Auto
3-Round Burst
5-Round Burst
Programmable semi-firing modes:
Semi-Auto
Binary
AUG Mode
Sniper Mode
Easy trigger-based programming
Low battery warning
Compatible with brushless motors
Note: In automatic mode, the first trigger pull fires a 3-round burst before switching to full-auto fire.
Construction
The rifle is primarily constructed from high-strength nylon fibre-reinforced polymer, offering excellent durability while keeping overall weight low. The material features a rugged texture and matte finish.
Key metal components include:
Flash hider
Outer barrel
Mock bolt
Ejection port cover
Fire selector
Bolt release
Magazine release
QD sling attachment points
Receiver pins
Charging handle
The rifle has been carefully assembled with close attention to fit and finish, resulting in a solid, wobble-free construction.
Ergonomics
The SA-F04-RL features enlarged ambidextrous controls, including the fire selector and magazine release, making operation easier for both left- and right-handed users.
The lightweight Light Ops stock provides a modern, minimalist design while maintaining excellent comfort. Features include:
Rubberised cheek rests on both sides
Curved rubber butt pad for improved shoulder support
Adjustable length of pull
Lightweight construction
The rifle also includes an ergonomic pistol grip and folding flip-up sights.
Internal Components
In addition to the Magnus™ hop-up chamber, Ather™ gearbox shell, Helium™ hop rubber, and sealed aluminium nozzle, the rifle also features:
8mm bearings
Steel gears
Polycarbonate piston with full steel rack
High-quality 6.03mm precision inner barrel
ESA™ Quick Spring Change System
The ESA™ quick-change spring system allows users to quickly adjust the rifle's power output to suit different site limits and gameplay environments without requiring specialist tools or gearbox disassembly.
Key Benefits
Lightweight and compact design
Functional bolt catch
Ambidextrous controls
HAL™ electronic trigger unit
Light Ops adjustable stock
Ergonomic pistol grip
M-LOK handguard system
ESA™ quick-change spring system
Folding flip-up sights
Precision 6.03mm inner barrel
Reinforced Ather™ gearbox
The SA-F04-RL Flex Gen.2 is an excellent all-round airsoft rifle, combining lightweight construction, advanced electronic controls, and upgraded internals in a compact and highly manoeuvrable platform.
