Specna Arms ORION™ V2 Gearbox Shell for AR-15 Specna Arms EDGE™ Replicas

Specna Arms
Code: SPE-08-027530
Was 23.49
Save 4.50
  • Reinforced 'ORION™' Gearbox
  • Includes bearings
  • Quick change spring compatible

Specna's ORION™ reinforced gearbox has gained an excellent reputation since it was released installed in the EDGE™ series of AEGs, and now Specna are offering you the opportunity to create your next gearbox build with a solid, reliable shell to tie it all together. Rated to handle heavy springs and including enhancements such as radiused cylinder windows and quick change spring functionality, the ORION™ gearbox shell is probably a tad more affordable than it should be!

Full description


The ORION™ Gearbox Shell V2 is designed for M4/AR-15 AEG replicas but is also the correct shell to use for an AEG SMG-5/MP-5 gearbox build. This shell includes 8mm bearings, and features radiused corners on the cylinder window, fixing a common weak point in AEG gearboxes which rears its ugly head when using high powered springs. The rear of the gearbox is open for the use of a quick-change spring guide, allowing you to change your spring and have your hand-built setup riding the sheer edge of allowed velocity limits at your local site, availing yourself of every tactical advantage in-game. 


  • Reinforced Gearbox
  • Radiused Cylinder window corners
  • Quick change spring guide compatible
  • 8mm Bearing Bushings included

Package Includes

  • Specna Arms ORION™ V2 Gearbox Shell for AR-15 Specna Arms EDGE™ Replicas



Internal Part Type
Gearbox Shell
Patrol Base - Warning Icon
This gearbox shell will require a Specna Arms quick change spring guide and is not compatible with standard spring guides

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 0.31kg


Colour Wheel Greyscale
Item Colour
Construction Icon
Reinforced Alloy
Internal Part Construction

Part Specific

Part for Power Source Type
Weapon Platform
  • AR
  • M4 / AR-15 / M16
  • Assault Rifle
Package Includes
  • Gearbox Parts
  • Shell
  • Bearings

Electric Part Specific

Gearbox Icon
Gearbox Version
V2 Gearbox
Gearbox Version Compatibility Variant
Version 2

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.