Gearbox type V2 with reinforced construction. The front part has been strengthened, the most exposed to damage has been considerably thickened, and the place of the contact with the cylinder has been improved so as to evenly transfer the loads. It is prepared for mounting 8mm bearings. Mounting this gearbox to replicas of other manufacturers than J.G. , you may need to slightly modify the shape of the gearbox itself or the chamber of the replica itself.