As a kid, I strapped a Nerf gun to my bicycle so I could dive bomb the neighborhood kids, while traveling—I imagined—at five times the speed of sound. As an adult, I've carried a foam-firing blaster to no fewer than three jobs. But a funny thing happened earlier this year: I realized my old guns weren't any good… » 12/18/14 4:56pm 12/18/14 4:56pm