OR he just feigned firing because wanted Fajo to think he was going to kill him. Prove otherwise.
He didn't fake it.
O'BRIEN: I'm reading a weapon in transit with Commander Data. It seems to have discharged, sir.
O'BRIEN: I'm deactivating it.
RIKER: Welcome back, Mister Data. Are you all right?
DATA: Yes, Commander. Please arrange to take Kivas Fajo into custody on charges of murder, kidnapping, theft.
RIKER: The arrangements have already been made.
DATA: A Varon-T disruptor. It belongs to Fajo.
RIKER: Mister O'Brien says the weapon was in a state of discharge.
DATA: Perhaps something occurred during transport, Commander.