You probably know how to install skins but my ultimate zip messed up with the folders. Just put the eq_smokegrenade to C:/Program Files
/Steam/Steamapps/accountname/Counter-Strike source/cstrike/materials/models/weapons/v_models/
and w_eq_smokegrenade to C:/Program Files
/Steam/Steamapps/accountname/Counter-Strike source/cstrike/materials/models/weapons/w_models/