Board Thread:General Nerf discussion/@comment-33092097-20190212224415/@comment-27306930-20190215033955

Yes, exactly. It's an extra set of flywheels with really fast motors, high crush, and bitey flywheels. You fire darts into it, and it accelerates them to even higher speeds unattainable in a single stage flywheel. It overcomes the Nerf "glass ceiling effect". Google it.

This particular one is neat because it uses a universal Nerf barrel attachment point, so it can go on any blaster that takes a barrel extension. Plus it has another attachment point, so you can add another barrel extension. Booyah !