Drone Cannon

The  is a weapon of alien origin which is added to Fallout 3 in the Mothership Zeta add-on.

Characteristics
It is the removed arm canon of a Guardian Drone. It fires a ball of energy that acts as a grenade, bouncing and then exploding after a period of about 3 seconds. Has the ability to move buses and cars before exploding

Obtaining
This gun can be found on the corpses of Security Drones, along with Alien Power Modules to power them. There is also a unique variant, named the Drone Cannon Ex-B, which can be recovered off the corpses of two experimental drones, both fully repaired and worth 1999 caps.

Appearances
The appears in the Mothership Zeta add-on for Fallout 3.

Bugs
When taking the cannon from a Security Drone, it has no icon while in the Drone's inventory.