ASG Ultimate Switch V3 Gearbox

Product code: 16634
  • For Version 3 Gearbox
  • Replace damaged Unit
  • Replacement Trigger Unit

A replacement Trigger Switch unit for Version 3 gearboxes, such as in AK and G36 Airsoft Weapons.

Full description


Built to upgrade or replace burnt out trigger units in your Airsoft weapon. Constructed from tough polymer and with copper contacts this part is designed to last.  This is the perfect part for your Airsoft spares box in case your weapon goes down the day before a Skirmish.


  • Lightweight Polymer
  • Copper Contacts
  • Made from a heat resisting compound
  • High-quality plating to ensure low inner resistance

Package Includes:

  • Ultimate Switch V3 Gearbox

Special Instructions:

If your weapon ceases to fire and there is no Motor response, it could be the Trigger Contacts on your switch unit. First, check your switch unit for Carbon Deposits (A black dust / residue) and clean them if required. However, this is only a temporary fix, we recommend replacing your Trigger Switch Unit and installing a MOSFET unit to protect your switch from Arching electricity, which is the cause of the carbon deposits.



Internal Part Type


Colour Wheel Greyscale
Item Colour
Construction Icon
Polymer with Copper contact

Part Specific

Part for Power Source Type

Electric Part Specific

Gearbox Icon
Gearbox Version
V3 Gearbox
Gearbox Version Compatibility Variant
Most Airsoft AEG

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.