According to Nerf's own rankings, kids as young as four years old can play with Nerf's soft balls. But they don't get their hands on foam tactical-assault toys until age six—when they're allowed such delights as the Ballzooka and Nerf Action Cyberstrike Gear, which includes the Strongarm. ("Kids will always be stronger than the competition with this rapid deployment, pump-action toy.")

The Razorbeast, however, remains out of reach until age eight.