"Oh, I love Texas. And today, by the way, I got to do the most Texas thing ever," Donald Trump Jr. said during his speech at the rally. "Since we came in late last night, I was able to bring my little son Donny to my buddy Dion's manufacturing facility at F-1 Firearms. And Donny, little kid from New York City, now Florida, thank God, got to make his own AR-15."