WELL Enhanced V2 Gearbox with MosfetNew revised gearbox by NWELL. This gearbox is stronger and can take more beating than the original WELLS gearboxes. With a slight radius, mosfet and enforced sides this gearbox is by far the strongest cast gearbox in Australia. This box if installed correctly will give you 300+ FPS with any barrel longer than 20cm. This Gearbox is a complete drop in gearbox ready to go!