Purgatory (
http://knightsoftheoldrepublic.filefront.com/file/Purgatory_Saber_Hilt;72764):
"In the days of constant and viscious combat between the Jedi and the Sith, an edge in battle could mean the difference between life and death. A graze with even this unignited hilt could mean the end for an unsuspecting Jedi. In the wrong hands, however, it could spell doom for the wielder."
This particular hilt is Sith by design. It is not upgradable, but rather contains some beefy stats and bonuses, including master two weapon fighting and paralysis, among others. It can be found normally in the game on Korriban.
>>SCREENSHOTS<< (
http://knightsoftheoldrepublic.filefront.com/screenshots/File/72764/1)