They will spawn with random "attachments" that will allow them to either harvest, have high damage output, act as a spawn location, or function as a tek transmitter.
The resource attractor rig provides a base weight increase, as well as decreasing the weight of resources like Metal, wood, stone and crystal. Works extremely well with the excavation rig!
If your on singleplayer, go for one with an excavator rig. It’ll get you everything, and i mean it. It can harvest almost every resource in group gathering and it has a weight reduction for everything. Yes. Everything.