Acid Cannon, Dinergate
Despite its name, derived from Swarm conventions and suggesting a heavier armament, the lightweight acid cannon is a derivation of the Swarm corrovox's arm-mounted weapon modified to be a stand-alone pistol-sized firearm. The weapon uses small amounts of power to produce caustic fluid. The trigger administers a jolt of electricity to the device, causing a reflexive constriction that forces blobs of this acid out of the weapon's throatlike barrel.
Source
Attack of the Swarm: Fate of the Fifth pg. 53
Dragonscript
ID
42d719622b571c739a4afefb