The new Prometheus EG Hard Shell Gear frame from Laylax just changed the way upgrades are done to the internals of version 2 gearboxes. This shell has been designed from the ground up to address the issues encountered in gearvox design, as well as making maintenance and upgrades easier. Jonathan Higgs of Airsoftology got his hands on one unit to find out if you it something to plunk down serious cash on.