Mariner shotgun skin by Überdroog. This skin turns the Kingpin shotgun chrome.
Installation: The zip file is set up so you only have to extract the pak4 file to your Kingpin directory. This will place the pak4 file in your kingpin/main folder.
If you already have a pak4 file in your main folder then extract the new pak4 to a temporary folder somewhere and rename it to another number such as pak2, pak3 etc which you don't already have. Then copy it to your kingpin/main folder.