Anybody know what type of gun he was using and how many rounds the mags hold?
There's a picture of his gun in the linked article. I'm not much into plastic guns and I don't recognize the weapon, but if it's one of those 13-15 round mags, with the proximity of the shooter to the passengers, it would seem to me that he wasn't a very good shot.
Hard to tell because there are so many “Glock like” guns on the market.
No visible hammer and it looks like it may have a trigger safety blade so it's definitely some type of striker fired DA action.