That being said, there is an interview some British journalist did with a man who witnessed the shooter (I saw the clip on Kyle Kulinsky’s youtube, not sure the actual source of the clip), and he described him as climbing up onto a roof with a rifle.
Could it be a 9mm technically im a pistol but i looke like a rifle kind of thing? Sure.
Im sure we will find out within 48 hrs some details about the shooter’s weapon, given that his corpse is already in custody.