The rubberducks_urban_sas.zip file you have requested: Skins / Character / rubberduck's SAS Urban BDU Skins - 1.19mb is not available. Perhaps try browsing all files for the game Call of Duty 4: Modern Warfare and upload any files you want to share or are missing. This is the only information we could locate:
Here are some great new SAS skins for Call of Duty 4 by rubberduck that give your soldiers urban BDU camo. Check 'em out!