Just the same old!

Place the snip_scout folder into valve/steam/steamapps/<your_username>/counterstrikesource/cstrike/materials/models/weapons/v_models

Place the w_snip_scout folder into valve/steam/steamapps/<your_username>/counterstrikesource/cstrike/materials/models/weapons/w_models

Place the scout folder into valve/steam/steamapps/<your_username>/counterstrikesource/cstrike/sound/weapons/

And There You Have It!

By Kermitthefrog62