Placeholder while page being built, check New_Weapons_&_Gear for live version.
Things you stick on your mech can be broken down into two groups, Equipment (you are here) and Weapons. Weapons require a valid hardpoint on the mech to fit, everything else falls under equipment.
Damage Reduction gear (need good category name, all the non armour stuff) and Damage Reduction (guide)
Other stuff (add more categories!)