Remington 7600 - 7615 TRI RAIL Front Pump or Forestock
Will fit either the 308 or 223 models the 7615 will use the existing bolt
7600 owners will also need to purchase a uncle mikes or grovetek
QD super Swivel Set - this will give you the longer action bolt needed to fit
the forend - available for about $38 search 7600SWIV for this item if needed

People have been crying out for these for a while 
a local source has produced a number of these and hopefully will remain as a regular item.

please look at the additional images - to see further what they can look like etc
note trail rail can be used to fit a bi pod , verticle grips , lasers , torches
there are also a number of different guard covers available
none come with the stock item and i may import a few different ones as time permits.