How to mod weapon skin ?

on youtube i can find videos's whit modded weapon skins look :


or is this just cf chinese ? :S :"( can somone plz download the cf chinese and upload here in mpgh :P or ********e becouse i download at 0.1 kb/sfrom the cf china site -.- that takes liek 1 year lol to download it :P

Its chinese weapons... like Kriss super V Tiger etc...