Skin creator: Paul Oldfield

Extract the files out of the zip folder

To install first place the folder rif_sg552: 
C:Program Files/Valve/Steam/SteamApps/<YOUR steam user name>/counter-strike source/cstrike/materials/models/weapons/v_models
And then place w_rif_sg552 in:  
C:Program Files/Valve/Steam/SteamApps/<YOUR steam user name>/counter-strike source/cstrike/materials/models/weapons/w_models
Finaly place the folder sg552 in:
C:Program Files/Valve/Steam/SteamApps/<YOUR steam user name>/counter-strike source/cstrike/sound/weapons/sg552 
If any of these do not exist create them 

If you have any queations about skinning please contact me on xfire my name is paul068