@ Mattn
Sure, but do you have a particular scale you'd want the gun to be before I converted it to an in game format? Like how many units long should this thing be?
@ H-Hour
The same issue occurred to me, mostly with the antimatter one, but the thing is I am not sure how and where these will appear in game. So the color saturation might be important for making them distinguishable at a distance in low light for example. Or it could still be too much.
Desaturation is really simple though, you can apply it to the whole unlayered diffuse textures and it will only effect the painted areas (the metal parts have no color anyway). It's just a matter of knowing how far to adjust it for the setting.
The same goes for the Roughness map.