In case you didn't know, my MOC Vector was part of a mass produced series of defense robots. Better robots (such as Heroes) have since replaced them in military and policing duties. Now, the Vector drones that haven't been scrapped are used for security guards, or reprogrammed for labor.
*I absolutely love these things. I originally built them as background characters for an upcoming comic. However they came out being very interesting in their own right. I included the original green Vector for size comparison, and to show his new head design (which is much more solid than the original). I will now list the weapons of the individual Vector Drones
Red- Air cannon, and a minigun that has a geared knob (to spin it)
Blue- Magnet, taser
Grey- Mortar, anti-aircraft gun