Meet Worgrock. The not-so-friendly outer rim space pirate alien dude with a mean appetite. Personal concept.
http://www.creativebloq.com/news/discover-the-secrets-of-the-last-jedi-with-3d-world-230
I recorded the modeling process for the weapon and made a tutorial. I share my modeling process as well as the model and some useful scripts.
You can get the tutorial here: https://gumroad.com/dabney
tutorial preview: https://www.youtube.com/watch?v=Bnv3J7U5rYA
Thanks for looking,
Darrell

Alien gun model for gumroad tutorial
http://gumroad.com/dabney
Alien weapon 3d modeling with Maya by Darrell Abney