Hexagonal Nerf Suppressor

This takes an existing NERF model for a barrel attachment [ http://www.thingiverse.com/thing:41914 ], and adds a simple hexagonal shape to the end of it. Hopefully giving an impression of a suppressor for a NERF gun. I'm hoping to be able to print this out in the future once my QU-BD Two-Up printer arrives.
This thing was made with Tinkercad. Edit it online https://tinkercad.com/things/5ZZRDxc7OE0