URSYN "Shamshir" assault engine: early production model [left] and mass-production model [right]. Detailed explanation of how this thing works will come with the next submission.
These are some really nice concept drawings. I like how you did it on an orange background because it gives the shading a nice feel. I'm quite envious of people who can draw mechas and other mechanical objects because I truly suck at them. You have a lot of skill!
Did you relined it on computer or did you paint right on top of a pencil sketch?