- HAL™ ETU Pre-installed
- 16:1 High-speed gears
- CNC Aluminium compression parts
Please note: This gearbox has an unknown-power spring pre-installed. We assume this will be an M120 and is not suitable for UK skirmish sites. We recommend replacing the spring with a Bolster Armouries M95, M100, or M105 spring.
If you're planning to refresh an old M4 AEG with high-performance internals, the Specna Arms AETHER™ Complete V2 Gearbox for M4/AR-15 AEGs is the easiest way! A complete gearbox equipped with the impressive internals which put the PRIME™ series on the map, the AETHER™ is pre-built, equipped with the HAL™ programmable ETU module and pre-wired to a Deans connector for your battery and female spade connectors for your motor.
The AETHER™ shell features witness windows so you can perfectly tune pre-cocking, angle of engagement and position the anti-reversal latch spring. This makes tuning the absolute best out of the gearbox much easier, something techs will definitely appreciate.
Also inside are CNC 16:1 ratio steel gears running on 8mm J-CAGE bushings, a reinforced piston with a full rack of steel teeth, a reinforced tappet plate for reliable feeding, and a CNC aluminium piston head, cylinder head and nozzle for maximum long-term durability. The cylinder is also CNC machined from steel, as is the spring guide. If you need a quick and easy way to bring your AR to the top tier of out-of-the-box performance, this is the solution!
Fast Delivery
Delivery & Postage
Here at Patrol Base, we send all our packages from our Warehouse based in the UK with the exception of European Warehouse Items. All of our parcels are sent with specially picked couriers to ensure your parcels get to you on time and in one piece.
For more information please check out our Delivery Information Page.
Estimates
Below are some rough postage prices for orders. Please note these are subject to change and are only a rough guide. For a more accurate postage estimate please use the Postage Calculator at the basket.
UK 3-5 day Standard
£6.95
From
1-2 Working Day Dispatch UK mainland
£9.95
From
Highlands / Islands
£24.99*
From
* Please note that Scottish Highlands, and Islands postage prices can vary wildly. Please refer to the Postage Calculator at the basket for the lowest possible price.
Returns
We want you to be absolutely happy with our products and services, so we provide the simple Patrol Base guarantee: if on receiving your item you are unhappy with your item for any reason then simply send it back to us. We will replace or refund the item.
You can return any item for any reason whatsoever, even if you have just changed your mind, within 14 days of receipt of the order. This is in addition to your rights under the Consumer Protection (Distance Selling) Regulations 2000.
For more information on returning products, and how to do it please visit our Returns Policy Page.
Description
Please note: This gearbox has an unknown-power spring pre-installed. We assume this will be an M120 and is not suitable for UK skirmish sites. We recommend replacing the spring with a Bolster Armouries M95, M100, or M105 spring.
Features
- Complete V2 gearbox - Drop-in installation in V2-based M4/AR-15 AEGs
- Pre-wired - Deans connector for your battery, female spade connectors for your motor
- AETHER™ Reinforced shell - Reinforced spine; AOE, ARL & pre-cocking windows
- Internal components:
- Reinforced Piston with steel full-tooth rack
- Reinforced Tappet plate
- Selector Plate
- CNC Aluminium piston head
- CNC Aluminium cylinder head
- CNC Aluminium nozzle
- CNC Steel cylinder
- CNC Steel quick change spring guide
- CNC Steel 16:1 gearset
- 8mm J-CAGE Bearings x 4
- 8mm Solid bushing x 2
- HAL™ Programmable ETU
- HAL™ ETU Programming Instructions
- Compatible with most M4/AR-15 & AR-9 AEGs - NOT for ambidextrous selector models, KRYTAC, ICS or VFC
- Unknown-strength spring pre-installed - It may be hot; we recommend a Bolster M95, M100 or M105 spring
Package Includes
- Specna Arms AETHER™ Complete V2 Gearbox for M4/AR-15 AEGs
Specification
General
Parts & Accessories Type | Electric Internal Parts |
|---|---|
Internal Part Type | Complete Gearbox |
 | Custom Parts |
Weight and Dimension
 | Approx.0.523KG |
|---|
Construction
 | Black |
|---|---|
 | Alloy shell. CNC aluminium nozzle, cylinder head & piston head. Steel cylinder, spring guide, piston tooth rack, bearings & bushings. Polymer piston, tappet plate, selector plate. |
Internal Part Construction | Polymer, Alloy, Steel, Aluminium, |
Part Specific
Compatible Power Source Type | Electric |
|---|---|
 |
|
 | Submachine Gun, Assault Rifle, |
Package Includes | Complete Gearbox |
Electric Part Specific
 | V2Gearbox |
|---|---|
Gearbox Version Compatibility Variant | Version 2 |
Bearing Specific
Spring Guide Bearings | Yes |
|---|
Size guide
Parts Fitting
Upgrades and Downgrades should only be undertaken by experienced players, or Airsoft Technicians. Please note, changing any internal parts of a weapon voids its warranty unless done in-house by our staff.
Please ensure that when fitting parts the part purchased is the correct part, as once a part has been fitted we cannot accept return.
We do know that players love to tinker, so we're here to give you help should you require it, and if needed you can get in touch with our workshop for more help!
Unique Parts
Please note that some parts may be unique to a specific brand of weapon. For example: Parts for an ASG M4A1 may not fit an ICS M4A1.
Parts from the same brand typically have a high chance of fitting, though be warned, some replicas use unique parts, so please ensure the part will fit before you attempt to fit it.
If you require help with fitting any parts feel free to get in touch with us via our Contact Us Page.
For more information with fitting parts, or should you require help, feel free to get in touch with our Workshop Department via our Contact Us Page.
Terms and Conditions relating to parts fitting can be read on our Terms and Conditions Page.