No. He used the Bushmaster to kill everyone. He only used the handgun to commit suicide.
I saw a photo of the Bushmaster still in the trunk.
He did not use the rifle only pistols.
It’s still so convoluted as to what he used to kill all those people with. The MSM never gets anything right the first time nor several times later. Some say handgun some say the .223 was in the trunk of his car.