How do I make a "unique" Assault Rifle with custom textures?

[Khtugg]

Hi all,

 

I like the assault rifle in Fallout 4 and I like DRunkCoWBoy's assault rifle retexture but if I enable that mod all assault rifles in the game look like that and I want my ass' rifle to uniquely use the mod texture. How does one make/mod a weapon into the game that utilise DRunkCoWBoy's wicked textures but otherwise functions and looks like a regular assault rifle? Including using the assault rifle ingame weapon mods you apply at a weapons workbench and Legendary effects?

 

Thanks for reading.