WAW Pack-A-Punch Materials Pack
This material pack contains three versions of the material: Regular, Gold and Chrome.
Each of them also contain a 4x tiling variant.
I might to do some more later on, but finding sources to more Pack-A-Punch camos/textures seems very difficult at the moment.
Resolution of texture is 2048×2048, achieved by A.I upscaling.
Original texture work belongs to Treyarch.
By the way, Chrome and Gold uses cubemaps, if your materials appears very bright, I suggest turning cubemaps off.