You can get it on my Gumroad store:
https://gumroad.com/l/RRXRm
On Cubebrush:
http://cbr.sh/jxtxq0
In this video I show you the process of designing fictional weapon concept using 3D-Coat, Marmoset Toolbag 3 and Photoshop. Very much the same steps that I've used to create some of the guns that you can see on my Artstation profile. I hope you can learn something new from it and expand your tool set as an artist. Cheers!