"...part of the automated defenses."
Samantha Carter[src]

Aschen Defense drones are small, unassuming black domes attached to the walls of strategically important rooms. Several moments are required for the drones to energize; once they are charged they launch needle-pricking energy bolts at a high rate of fire against aggressors, leaving small puncture marks on the body of individuals.

The weapon's shots are relatively weak and take multiple shots to kill or disable a target, but they are highly accurate. The defense drones are easily susceptible to Goa'uld weaponry including zats, which disable them with the electric pulse, and staff weapons, which blow them apart. (SG1: "2010")

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