Part 2 of this mod emphasizes more on the 'obscure' part of the guns' texture variants, two fictional and one arguablly real.
Gold, Samurai Edge and Chromosynth.
If you know the Resident Evil franchise, you know Samurai Edge. This one is more reminiscent of Wesker's version.
Chromosynth is a fictional sci-fi company of my own invention, they make Black&White weapons with their logos in it, where the gimmick is that they allow their glow parts to be changed to any colour. Their motto is "Creativity is THE powerful weapon".