Terminator 2 Plasma Rifle Concept

Something I have been meaning to improve on to make look more like the attached link. Ofcourse with many projects its a matter of time, but I know of some one out there that could bring it to life ; )
and make it look more like this : )
https://www.yourprops.com/morganthirteen-ONEYE-1-1-PHASED-replica-movie-prop-Terminator-2-Judgment-Day-1991-YP60453.html