Anti-Replicator gun

The anti-replicator gun (or ARG, for short) is a weapon developed by Lieutenant Colonel Samantha Carter. The weapon is based on the Alteraan-designed weapon that Lieutenant Colonel (at the time) Jack O'Niell made using the Alteraan's repository of knowledge and an Asgard matter-converter/CAD program.

All replicators, human form, Milky Way, Pegasus, are all computers, and are all composed of many smaller pieces. The original replicators were made out of larger, "enter-key"-sized blocks. The milky way human form are made from cellular-sized blocks. Finally, the Pegasus replictors are composed of nanites. But the thing they all share in common, is that they all use a link to keep the blocks together. Each block has it's own processor and memmory core. When enough of the blocks accumulate immediate surroundings, they come together to form larger, more complex organisms.

The anti-replicator gun works by disrupting the energy link between the individual blocks/cells, in much the same way the Dakara super-weapon does, which was why Lieutenant Colonel Carter was able to use it to wipe out the Milky Way replicators.

However, the weapon is not perfect. A major flaw in the weapon allows the replicators to change the frequency of the energy that hold them together. When they-after enough of them have been destroyed-discover what frequency the weapon uses to disrupt their energy link, they simply adapt, and change the frequency of their link, and the weapon is rendered impotent.

The weapon is very adaptable. It started out as a very big, bulky, rocket launcher-like design. But it was very soon adapted to an Asgard vessel, the Daniel Jackson, to spread the weapon's wave over an entire planet. It can also be adapted to automated defense sattelites. The modern version of the ARG, however, is a sleek rifle design, with a sattelite being produced to protect Atlantis.