We have mentioned this in the Popular Airsoft Magazine, and now it's released and you can get one for yourself at  Airsoft Unlimited... "New breakthrough technology from Modify.  The fluted casing increases strength, reduces weight, and dissipates heat more efficiently - allowing the Torus to operate at a lower temperature than other boxes. 

This address the problem frontend cracking frequently encountered in other version 2 boxes.  The inspection ports allow you to look inside the shell without actually disassembling, and also permit lubrication without disassembly.  The large high torque screws ensure a secure fit and prevent the components from coming loose.  Composed of a special zinc alloy.  Includes a unique tappet plate and driver."