NERF Dracogen barrel extension

This is design #4 for a NERF barrel extension. It's based on a modded "Dracogen STV space gun" kit that Volpin Props[1] made.
There is a "bayonet mount" ring mount that lets you conect it to some NERF blasters. The added length might inrease the accuracy of your shots.
I have made several other designs with various greebles.
DO NOT FORCE CONNECTION or you may break your NERF blaster.
Read instructions before printing.
I would love to get feedback from people.
1] Based on https://www.flickr.com/photos/volpinprops/14877022158/
Very tall model. So tall, in fact, I created a shorter version http://www.thingiverse.com/thing:984174