Brutal doom weapon skin?

Theirs a certain weapon skin pack/addon I have been trying to find lately. It was used in the brutal doom 19 trailer( only the mini gun and rocket launcher had different skins)does anyone know what the name of this addon is called, Thanks in advance.

PS: Here is the trailer if any of you haven't seen it.
http://www.youtube.com/watch?v=89iszJNcKQw

Have you tried asking the uploader?

I know those (and the plasma gun) were used in 0.19 test 1 before the minigun and plasma gun were changed back.