I just really like to see one, and. would thin it would be awesome
You and like twenty thousand other nerfers.
https://www.youtube.com/watch?v=jMT3FNWjEhA
I'm necro'ing this thread rather than repeating it, since there's an additional/specific answer to the question.
Here's a specially-built Trilogy shell tube:
https://www.etsy.com/listing/913526690/tube-magazine-for-trilogy-mag-system-diy
What they don't tell you in that listing is that it's a companion piece for a ridiculous Rube Goldberg contraption, much like that giant waste of Legos above, but 3D printed instead.
Here's a screenshot I just snapped from an American Foam youtube video:
What do you think?