Rival D.Va Blaster Barrel Adapter

Update 10/26/19 - You can find essentially the continuation of this piece at https://www.thingiverse.com/thing:3938275 where I cut down size a bunch for the sake of simplicity.

Update 1: Added new files with 21.4mm OD to better fit some printing tolerances.In my testing the slots for the orings are a little snug, so I'll be updating those when I have time. I may also be shortening the entire assembly.

An adapter insert for the Rival D.Va blaster that *should* allow a fairly air tight fit