Why are there no pictures with textures in the textures dad? (STALKER: Call of Pripyat)

Unzipped stalker: call of pripyat to change the texture of the weapon to your taste, but in the folder - "STALKER - Call of Pripyat UEgamedata textures wpn", there are no pictures with textures to see where the texture looks like, and in general to start changing it ...