This is a shortened version of the Dracogen barrel, http://www.thingiverse.com/thing:451186. It should fit and print in one part on "more normal height" 3d printers.
It's based on a modded "Dracogen STV space gun" kit that Volpin Props made.
There is a "bayonet mount" ring mount that lets you connect it to some NERF blasters. The added length might incease the accuracy of your shots, or the friction may make them worse. But it looks cool!
The two versions here represent a 145mm barrel length and a 125 barrel length. You probably need the shorter
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/
There is a tube that inserts into the NERF blaster barrel. To support this, there is a membrane placed across the bayonet mount. You'll need to cut this out.
I've printed the original model and the 125 model in ABS without supports, but with a raft.