Rajon Rondo is hoping he won't have to fight a criminal gun charge much longer ... TMZ Sports has learned he's just asked a judge to throw out the count he's facing.
Court documents we obtained show the former NBA star's lawyer filed a motion on Tuesday to dismiss the unlawful carrying of a handgun charge prosecutors hit Rondo with following his arrest late last month.
NBA's Rajon Rondo Arrested, Booked On Weed & Gun Charges
In the documents, Rondo's attorney argues the charge is unconstitutional .