Subsonic Repeater

The Subsonic Repeater is a close-range SMG. It has a very high rate of fire, and thus remains the fastest firing weapon on Cybertron.

Fall of Cybertron
Subsonic Repeaters were used during the later days of the Great War between the Autobots and Decepticons. They replaced the Ion blasters used earlier, and are commonly used by Infiltrators. Perceptor, Wheeljack, Jazz, and Cliffjumper all used this weapon during a skirmish in the Sea of Rust.