The moment came just after a grieving father called Rubio's reaction to the mass shooting "pathetically weak" and asked whether the senator would support banning assault rifles like Nikolas Cruz's AR-15 in order to save the lives of children.
“It’s too easy to get. It is a weapon of war,” the father emotionally said. “The fact that you can’t stand with everybody else in this building and say that, I’m sorry.”
A flustered Rubio assured him, “I do believe what you’re saying is true,” before launching into his argument against an assault rifles ban.
>> Related: Alleged Florida high school shooter has $800,000 inheritance, reports say
CNN's town hall follows last week's shooting at Marjory Stonemason Douglas High School where gunman Nikolas Cruz fatally shot 17 people and injured over a dozen more. In the time since, many of the school's surviving students have been commanding public attention and demanding a conversation about gun reform in the United States.
WATCH: Florida Sheriff Attends Town Hall For Gun Reform