It has significant delta-v in order to allow it to reach friendlies in the middle of a mobile space battle.

It has enough armor to survive a hit or two. Putting too much on would reduce it's speed so it's main defense is it's ability to be very hard to hit.

I would imagine that it has a couple interchangeable arms, but the basic package has two magnetic grabber claws, a plasma torch and the 3D printer nozzle.

The 3D Printer can make basic electronics and armor.