M4 airsoft SA-F05-RL FLEX ETU

Specna Arms SA-F05-RLFLEX™ Light Ops Stock/New Receiver HAL ETU™ Airsoft Carbine

Specna Arms introduces the FLEX™ line featuring the advanced HAL™ chip for exceptional performance and easy programmability through trigger and selector functions.

HAL™ Chip Features

• Trigger detection: Based on magnetic sensors and Hall effect technology
• Active brake: Improved trigger response and gearbox protection
• Binary trigger: Allows quick double-shot firing
• Adjustable trigger sensitivity: 5 levels, from 20% to 100%
• Adjustable pre-cocking: 6 levels
• Programmable AUTO fire modes: Full auto, semi, 3-round burst, and 5-round burst
• Programmable SEMI fire modes: Semi, binary, AUG, sniper
• Easy programming: Configure settings via trigger
• Low battery alarm: Alerts when power is low
• Brushless motor compatibility: Optimized for high-performance setups

Note: The AUTO function initially fires a 3-round burst, followed by Full Auto.

Robust Construction and Material Quality

The replica’s body is crafted from nylon fiber-reinforced polymer, offering durability and a matte finish. Key components are made of metal for strength and realism:

• Aluminum alloy parts: Flame suppressor, external barrel, gas block, handguard holder, sights, slide, fire mode switch, magazine release, pins, and reloading lever
• Double-sided manipulators: Enlarged controls for ambidextrous use
• Functional bolt-catch

Light Ops Stock Design

The Light Ops Stock is a minimalist, lightweight stock featuring:

• Rubber non-slip pads on both sides of the cheek piece
• Curved rubber butt plate for shoulder comfort

Internal Mechanics

• 8mm slide bearings
• Steel gears
• Polycarbonate piston with a full steel rail
• Type 2 cylinder and steel cut-off lever
• Rotary Hop-Up chamber with a high-precision 6.03mm barrel

Quick Spring Change System (ESA™)

The ESA™ system allows rapid adjustment of FPS for different field conditions without needing special tools.

Additional Features

• Lightweight and compact design
• Double-sided manipulators
• HAL™ system integration
• Light Ops stock with ergonomic pistol grip
• M-LOK front end with three RIS sections and dorsal rail
• Precision barrel and rotary Hop-Up system
• ESA™ quick-change spring system
• Folding sighting instruments

Package Includes

• S-Mag Hi-Cap Magazine
• Cleaning rod
• Deans adapter - small Tamiya
• Replica

Package Excludes

• Battery and charger are not included

Technical Specifications

• Battery included: No
• Bearings diameter: 8mm
• Blowback: No
• Color: Black
• Product length: 84 cm
• Weight: 2335 g
• Power source: Electric
• Material: Metal and plastic
• Muzzle velocity: 370 FPS
• Fire modes: Full-auto and Semi-auto
• Gearbox version: V2
• Hop-Up: Adjustable
• Inner barrel length: 320 mm
• Minimum length: 755 mm
• Magazine capacity: 300 rounds
• MOSFET/ETU: Yes (HAL™)
• Specna Arms Line: FLEX™
• Quick Spring Change system: Yes
• Plug type: Deans / T-connect
• Barrel thread: 14mm CCW