produced: 2007 Saga II
source: EU: Star Wars: Clone Wars "Chapter 23"
head: dome, brushed silver with purple details, red dot
R4-M6 was socketed into Mace Windu's Eta-2 Actis-class interceptor. It was destroyed during the Battle of Coruscant (19 BBY), after Mace Windu collided with a fleet of vulture droids and droid tri-fighters. R4-M6, like R4-P17 (and few other astromech droids owned by Jedi), was modified with the head of an R2-series astromech droid.