raymond lee fryberg jr. ` bought a gun in 2013 despite a domestic violence protection order against him banning him from doing so '
he ` said he had no restraining orders out against him when he filled out his federal form and the system did not pick up the error '
he was arraigned on thursday and faces 10 years behind bars if guilty .
last october , his son jaylen , 15 , shot dead four of his classmates in the cafeteria at their seattle high school before taking his own life .