Actually, I think most of the gear has a plastic piece associated with it. If not more than one. That's a big thing for this game: being able to create a gear set. The real trouble is making a character exactly representative of what is on the board at any given moment.
You can magnetize, but that is difficult to Do considering the small scale.
Personally I don't bother to use 1:1 representations. The four starters are easy to distinguish and can last the whole game. The armor kits I use as a side hobby to build in my spare time.
OK maybe a better question is what gear other than Armor and Weapons have model equivalents?
It would be nice to have a identification sheet for each sprue so as to understand what all the little bits are for. Has anyone done this? I know Poots probably already has one done somewhere but unreleased.