Mark IX

Mark IX, also known as a "gate buster". It is a long cylindrical device meaned to destroy eveything within a 100 miles radius, including the otherwise indestructable Stargate. When deactivated, it is in "mode 3", and from "mode 2" it is extremely volatile. Any effort to disrupt, alter or destroy the device will lead to the weapon detonating immediately. It was used to counter the Ori to getting a foothold in this galaxy, but the Ori technology only absorbed the energy, because it was working with a black hole as a source. (SG1: "Beachhead")