Nek'sed

The nek'sed lightning cannon is an energy weapon developed by the Goa'uld Empire. It appear as a two-pronged device the size of a Death glider cannon. The nek'sed is attached to a portable Naquadah generator. When activated, the device hums and electrifies the air between the two prongs. When firing, a blue arc of electricity fires from the end of the cannon and strikes the target location with such a massive amount of energy that even the toughest of Jaffa would be killed.

The weapon is a suitable defensive weapons as it can kill groups of enemy infantry, particularly Jaffa whose metallic wearing armour conducts the electricity even further. Goa'uld engineers designed the weapon for the System Lords, however, it is rarely used due to its size and the need for a portable naquada generator. Furthermore, Jaffa warriors tend to favour close quarter combat and the use of the weapon would kill both loyal and enemy Jaffa alike.

This weapon was used against SG-1 and was the catalyst that forced two members of the team to jump to the Stargate in Antartica.

Source

 * Fantastic Frontiers rpg