OM 5 was a B1 battle droid used by the Confederacy of Independent Systems during the Clone Wars. During the Battle of Ryloth, OM 5 and OM 7 were sent by their commander to check out a Republic Gunship that was blocking their path. OM 5 and OM 7 pulled the door open the gunship only to discover it was full of explosives. A clone trooper hidden in the nearby hill pushed the trigger, which made a huge explosion and destroyed OM 5 and OM 7.