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

Complete ÆTHER™ V2 / M4 gearbox with HAL™ ETU unit from Specna Arms in black.

Premium base for PRIME™ M4 and MK18 rifles.

Extremely durable reinforced shell patented in the EU.

CNC upgraded internal parts for maximum performance.

HAL™ ETU unit for lightning trigger response and advanced firing modes.

QSC ESA2 quick spring change.

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.