A 2013 Pew poll found that just 16 percent of 18- to 29-year-olds own a gun, compared to 24 percent of the total population.
And how many places forbid an eighteen year old to own a gun? I would also suspect there are a lot who do but are “not tellin.”
I suspect the 24% number is due to many people not telling. I would not answer any question about gun ownership asked by a pollster.