SA ÆTHER™ V2 / M4 Completed Gearbox HAL™ ETU (8 mm) - Black

Specna Arms ÆTHER™ – premium gearbox with HAL™ ETU for maximum performance

Looking for the most durable complete gearbox for the M4 / AR15 platform? Want a gearbox that can handle strong springs, offers high RoF and long service life without further upgrades? Searching for modern electronics with fast trigger response, pre-cocking, binary fire and safety features for the whole setup and battery? Then the ÆTHER™ V2 gearbox combined with the HAL™ ETU is the perfect choice. The ÆTHER™ gearbox features an EU-patented reinforced shell used in the premium PRIME™ series. Inside you’ll find CNC gears 16:1, a piston with 14 metal teeth, CNC cylinder and piston heads, double sealing, a stainless cylinder and a precision CNC nozzle with a strong tappet plate. The HAL™ ETU electronics use the Hall effect for accurate trigger sensing and offer pre-cocking, active brake, binary mode, AUG mode, 3/5-round bursts, battery alarm and support for brushless motors. Together they create one of the most advanced and durable internal sets on the market – ready for 7.4V and 11.1V Li-Po, strong springs (up to M140), heavy load and long-term use.

Complete ÆTHER™ V2 gearbox

Key Features

• Patented reinforced shell:
  EU patent no. 015044865-0001, designed for high stress and M135 spring.
  
  
• CNC 16:1 gears:
  Ideal ratio for high RoF and durability even with strong springs.
  
  
• 8mm J-Cage bearings:
  Combination of ball and slide bearings for smooth operation and long life.
  
  
• Piston and air system:
  Polycarbonate piston with 14 metal teeth, CNC piston head and CNC cylinder head with double sealing.
  
  
• CNC nozzle and strong tappet plate:
  Reliable feeding and stable performance even at higher RoF.
  
  
• AoE inspection:
  Visual access to the angle of engagement of the piston and sector gear.
  
  
• HAL™ ETU electronics:
  Hall sensors, active brake, binary mode, pre-cocking and programmable modes.
  
  
• Firing modes:
  SEMI (semi, binary, AUG, sniper delay) and AUTO (auto, 3-round burst, 5-round burst).
  
  
• Brushless motor compatibility:
  Full support for Dark Matter or Warhead motors.

HAL™ ETU unit instructions

Technical Specifications

• Type: Gearbox V2
• Gears: CNC steel, ratio 16:1
• Bearings: 8mm J-Cage (ball + slide)
• Piston: Polycarbonate, 14 teeth
• Piston head: CNC aluminium
• Cylinder head: CNC aluminium, double sealing
• Cylinder: Stainless, ribbed
• Nozzle: CNC aluminium
• ETU unit: HAL™ ETU
• Recommended battery: 11.1V Li-Po
• Connector: T-Dean (rear wiring)
• Functions: Active brake, pre-cocking (6 levels), trigger sensitivity (5 levels), binary mode, 3/5-round bursts
• Weight: 525 g

Package Contents

• Complete ÆTHER™ V2 gearbox
• HAL™ ETU electronic unit
• Selector plate

Important notice before using the rifle

To fire the rifle, the HAL ETU unit must be activated using the exact steps below – otherwise the rifle will not respond after connecting the battery:

1. Switch the fire selector to SAFE.
2. Connect the battery and wait 3 seconds until the beep sounds.
3. Press and hold the trigger for 5 seconds until another beep sounds.
4. The rifle is now ready to use.