My TG3 are secondhand, so the rubber feet they came with are of uncertain origin. The two keyboards did not have similar feet, so they're unlikely from the factory.
The TG3 bottom plate is anodized & brushed aluminum. It's classy. My trackpad model has four beefy threaded holes, presumably for a vehicle mount, but that might be a Data911 option, not standard for all TG3 BLT models.