Rail gun

Rail guns are the pinnacle of human-made weaponry and are even impressive by Transformer standards.
Fiction
Marvel Generation 2 comics

Unfoldings! Realignments Final Transformations
Revenge of the Fallen film
Based on studies of N.B.E.-1 by Sector Seven, the rail gun is an advanced anti-N.B.E. weapon which fires a steel projectile at Mach Seven, currently used only in secret trials by the United States Navy. Revenge of the Fallen
After realizing that Devastator was trying to get to the star harvester inside the Great Pyramid of Giza, former Sector Seven agent Seymour Simmons took a radio from a downed Jordanian helicopter and managed to contact the U.S.S. John C. Stennis. Speaking with Captain Wilder, Simmons informed the Captain of Devastator's presence, and said that the rail gun would be the only weapon capable of taking out Devastator. After Wilder said that the rail gun's existence was classified, Simmons screamed not to talk to him about classified and told him to relay a ready order to the properly equipped ship. Wilder contacted the U.S.S. Kidd and got them linked to Simmons frequency. After Simmons relayed the coordinates, the personnel on the Kidd aimed and fired the rail gun. The weapon struck Devastator and instantly severed his right arm and punched a hole through his head, causing him to lose his balance and fall from the top of the pyramid to his death below. Revenge of the Fallen
Notes
- Rail guns are totally real, and their existence is not at all a secret. A model as advanced as the one in Revenge of the Fallen, let alone Generation 2, is still many years beyond current technology, however.
- The Revenge of the Fallen video game adapted the idea of the rail gun into the Axiom Gun.


