Well I just heard back from McMillan and they are "pretty certain" that this stock is one of their ultralight versions for some of the Remington KS models that they used to produce for Remington but has since been discontinued. From my understanding it is a Remington "factory" stock for their KS line and is similar to the McMillan Edge with ultralight fill which after further digging comes in right around 22 oz. for the Model Seven. Thanks for all the insight everyone.
I also forgot to mention that this does have a Remington factory recoil pad mounted but I just thought it was added to the stock afterwards.
Anyways, thanks again!
Your not thinking of selling it are you?