hi there mate you will need to get some of these http://cgi.ebay.co.uk/QUICK-RELEASE-SWIVEL...%7C240%3A1318to and fit them to the stock, you only need the stud but the other bits will allow you to fit a sling also
and then your bipod http://cgi.ebay.co.uk/Deben-Telescopic-Rif...A1%7C240%3A1318
atb rob