The m4dp1x3l_mp5_silver.zip file you have requested: Skins / Weapons / CS: Source MP5 Silver Skin - 432.85kb is not available. Perhaps try browsing all files for the game Counter-Strike: Source and upload any files you want to share or are missing. This is the only information we could locate:
This is the first CS: Source Silver - Black MP5 skin. This one took me a good 2 hours of work, which includes testing, modify, testing again, modifying, etc. Enjoy!