We should … consider raising the minimum age to buy or possess (without adult supervision) a firearm to 25.

People under 25 are responsible for a disproportionate amount of America’s gun violence. According to data collected by the FBI, nearly 50 percent of all gun homicides are committed by people younger than 25. Most of those perpetrators are 18 to 24….

There is a reason people under 25 are dangerous with guns. The scientific literature over the past two decades has demonstrated repeatedly that the brain does not fully mature until the mid-to-late 20s….

Using brain maturation as a basis for age cutoffs is smart policy. Rental car companies won’t rent (or charge higher prices) to people younger than 25 because the actuarial tables clearly show that younger drivers have significantly higher accident rates….

We limit other rights, including the right to vote, the right to serve on a jury and the right to marry, on the basis of age. Although 18 is a common cutoff, there’s nothing magical about that number. For guns, the science and evidence suggest, the right age is 25.