9PS

The Gundark Fist 9PS is a scattergun that is becoming increasingly popular with discriminating smugglers. This weapon combines the best parts of pistols and rifles to make a unique weapon that are very powerful. If foes get a point-blank shot from a full charged scattergun they will be on the ground for a while, if they ever get up. Showdowns usually won't start with a scattergun, but these powerful weapons are quite often the last ones that are holstered.

Sources
 * Star Wars: The Old Republic Encyclopedia