Board Thread:Questions and answers/@comment-28773666-20160626000251/@comment-27306930-20160705200717

Another way to look at it, if the blaster weighs 1000 times more than the dart, then it's going to have 1/1000th the acceleration of the dart in the form of a kickback.

With Nerf, you're probably imparting as much energy into pulling the trigger as the blaster is imparting to you ;-)