If you want a spare Krytac Complete Version 2 Gearbox or you wan to use it for a project, you cna now purchase it as is without coming inside a Trident AEG... "The KRYTAC Nautilus reinforced 8mm ball bearing gearbox features an integrated MOSFET to regulate electronic signals and to protect the trigger contacts. The corners of the gearbox that surround the cylinder feature a smooth radius, as opposed to a 90° angle, to prevent fracture.