Well, my 700VS is at Jim Cloward's getting set up as a match rifle, including using one of his scope bases built to co-exist w/ a rear sight base. For someone else not dealing w/ a rear sight, this would make an excellent foundation for a scope. Extends about 3/4" beyond the front of the receiver. Try the link here
to get an idea of what it looks like, p/n 306-06 for a Rem700SA. Some wear marks in the slots; hey, it was used!
These go for around $125 new.
Selling for $75 + S&H