The Gravity Weapon was a specialist weapon mounted onto the nose of Switchblade and operatred by Miles Mayhem from inside that vehicle. It fired a powerful and devestating gravity beam capable of squishing anything in it's path.
V.E.N.O.M. first tested the weapon on a speeding locomotive carrying a cargo of coal just outside of Philedelphia. As reported by Jude Wilson of the evening news, all of the crew managed to escape, but the coal disappeared. While investigating the crime scene, Scott Trakker and T-Bob found a giant diamond like gem which appeared to have created from the coal with the gravity weapon.
When M.A.S.K. agent Alex Sector investigated the gem, he found it to be made of the hardest substance he ever encountered. However, the crystal was not a natural diamond, but compressed coal.
Mayhem used part of the crystals he created to armor two other V.E.N.O.M. vehicles, Jackhammer and Manta in a nearly unbreakable coating. Their next target was to rob the Philedelphia mint. While engaging M.A.S.K., several of their vehicles were damaged, including Thunderhawk and Rhino while Firecracker had already been crushed by the gravity beam during an earlier encounter.
Thanks to Gloria Baker's cunning use of her Aura mask, the gravity beam was turned against Mayhem by turning the beam upwards. This caused the control to jam. Unable to turn the beam off, he lost control of Switchblade and had to make a crashlanding. The beam proceeded to destroy the entire vehicle.