YouTube quietly put new age restrictions on gun videos, including content showing homemade and automatic firearms. The changes followed a widely covered TTP report that found YouTube recommended hundreds of videos about guns and gun violence to accounts for nine- and 14-year-old boys interested in video games. The recommended videos included demonstrations of 3-D printed guns and instructions on how to convert handguns into automatic weapons, and TTP noted at the time that YouTube took no apparent steps to age-restrict them.

The group Everytown for Gun Safety Support Fund highlighted TTP’s report in a series of recommendations to YouTube for dealing with gun content. Manhattan District Attorney Alvin Bragg also cited TTP’s report in a letter calling on YouTube CEO Neal Mohan to limit children’s access to homemade “ghost gun” videos.