Dan Baum, 'Gun Guys' Author, Vows Teaching Young Children To Shoot Is A 'Good Thing' (VIDEO)

Three days after a horrific shooting in Cumberland County, Ky. involving a 5-year-old boy accidentally killing his 2-year-old sister, the question of guns and children has reached a fever pitch.

Rep. Elijah Cummings (D-Md.) and Dan Baum, author of "Gun Guys," debated the topic on Thursday's edition of "All In with Chris Hayes." There was a clear line in the sand between the two on how the issue should be handled.

"Teaching young children to shoot can be disciplining," said Baum, who started shooting at age five. "It can be mind-calming. There's hand-eye there, there's family tradition. Teaching young children to shoot, I think, is a good thing."

Cummings held the opposite perspective, drawing upon personal tragedy. Back in June 2011, his nephew, Christopher Cummings, was shot to death in his off-campus apartment near Old Dominion University in Norfolk, Va.

Representing Maryland's 7th District, which encompasses a large section of Baltimore, Cummings expressed his belief that the "inner city" is a different game.

"The young people in my neighborhood, 15-, 16-year-olds, tell me they can get a gun faster than they can get a cigarette, if they have the money," Cummings said. "That's a problem. And these are people with no training."

WATCH Baum & Cummings' debate begin at the 7:00 mark above. For the full segment, click here.